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CBSE XI | Mathematics 
Sample Paper – 6 
 
  w   
CBSE Board 
Class XI Mathematics 
Sample Paper – 6 
Time: 3 hrs  Total Marks: 100 
      
General Instructions:  
1. All questions are compulsory. 
2. The question paper consist of 29 questions. 
3. Questions 1 – 4 in Section A are very short answer type questions carrying 1 mark 
each. 
4. Questions 5 – 12 in Section B are short-answer type questions carrying 2 mark each. 
5. Questions 13 – 23 in Section C are long-answer I type questions carrying 4 mark 
each. 
6. Questions 24 – 29 in Section D are long-answer type II questions carrying 6 mark 
each. 
 
SECTION – A 
 
1. Find the derivative of cos[sin v x]. 
 
2. Write negation of : “Either he is bald or he is tall.”  
 
3. Express 
6
i ?
 in the form of b or bi where b is a real number.  
OR 
Find modulus of sin ? – i cos ?. 
 
4. Two coins tossed simultaneously, find the probability that getting two heads. 
 
                                                                     SECTION – B 
 
5. A and B are sub-sets of U where U is universal set containing 700 elements. n(A) = 200, 
n(B) = 300 and n (A n B) = 100. Find n(A’ n B’). 
 
6. If the function f : N ? N is defined by f(x) = vx then find 
? ?
? ? ? ?
f 25
f 16 f 1 ?
. 
OR 
If f(x) = x
2
 – 1 and g(x) = vx find f ° g(x) =? 
 
 
 
Page 2


  
 
CBSE XI | Mathematics 
Sample Paper – 6 
 
  w   
CBSE Board 
Class XI Mathematics 
Sample Paper – 6 
Time: 3 hrs  Total Marks: 100 
      
General Instructions:  
1. All questions are compulsory. 
2. The question paper consist of 29 questions. 
3. Questions 1 – 4 in Section A are very short answer type questions carrying 1 mark 
each. 
4. Questions 5 – 12 in Section B are short-answer type questions carrying 2 mark each. 
5. Questions 13 – 23 in Section C are long-answer I type questions carrying 4 mark 
each. 
6. Questions 24 – 29 in Section D are long-answer type II questions carrying 6 mark 
each. 
 
SECTION – A 
 
1. Find the derivative of cos[sin v x]. 
 
2. Write negation of : “Either he is bald or he is tall.”  
 
3. Express 
6
i ?
 in the form of b or bi where b is a real number.  
OR 
Find modulus of sin ? – i cos ?. 
 
4. Two coins tossed simultaneously, find the probability that getting two heads. 
 
                                                                     SECTION – B 
 
5. A and B are sub-sets of U where U is universal set containing 700 elements. n(A) = 200, 
n(B) = 300 and n (A n B) = 100. Find n(A’ n B’). 
 
6. If the function f : N ? N is defined by f(x) = vx then find 
? ?
? ? ? ?
f 25
f 16 f 1 ?
. 
OR 
If f(x) = x
2
 – 1 and g(x) = vx find f ° g(x) =? 
 
 
 
  
 
CBSE XI | Mathematics 
Sample Paper – 6 
 
     
7. Find the range of the function f(x) = |x – 3| 
OR 
Let a and B be two sets such that : n(A) = 50, n(A ? B) = 60 and n(A n B) = 10. 
Find n(B) and n(A – B). 
 
8. Let A = {6, 8} and B = {3, 5}. Write A × B and A × A. 
 
9. 
cos A sin A 1
Prove that:
1 tan A 1 cot A cosA sin A
? ? ? ?
??
? ? ? ?
? ? ?
? ? ? ?
 
OR 
Prove that tan
4
 ? + tan
2
 ? = sec
4
 ? - sec
2
 ?  
 
10. By giving an example, show that the following statement is false.   
“If n is an odd integer, then n is prime.” 
 
11. If a, b, c are in GP then prove that log a
n
, log b
n
 and log c
n
 are in AP. 
 
12. The focal distance of a point on the parabola y
2
 = 12x is 4. Find the abscissa of this point. 
 
SECTION – C 
 
13. If tan (pcos ?) = cot (psin ?) prove that
1
cos
4
22
? ??
? ? ? ?
??
??
. 
 
 
14. Let a relation R1 on the set of R of all real numbers be defined as (a, b) ? R1 ? 
1 + ab > 0 for all a, b ?R. Show that (a, a) ? R1 for all a ? R and (a, b) ? R1 ?                           
(b, a) ? R1 for all a, b ?R. 
 
15. Prove that 
4
2 3 4 1
cos cos cos cos
9 9 9 9 2
? ? ? ?
? . 
 
16. If x = a + b, y =ab ? ? ? , z = ab ? ? ? where , ?? are complex cube root of unity. Show 
that xyz = a
3
 + b
3
. 
 
17. A bag contains 7 white, 5 black and 4 red balls. If two balls are drawn at random from 
the bag, find the probability that they are not of the same colour. 
 
18. The sums of first p, q, r terms of an AP are a, b, c respectively. Prove that  
? ? ? ? ? ?
a b c
q r r p p q 0
p q r
? ? ? ? ? ?  
 
Page 3


  
 
CBSE XI | Mathematics 
Sample Paper – 6 
 
  w   
CBSE Board 
Class XI Mathematics 
Sample Paper – 6 
Time: 3 hrs  Total Marks: 100 
      
General Instructions:  
1. All questions are compulsory. 
2. The question paper consist of 29 questions. 
3. Questions 1 – 4 in Section A are very short answer type questions carrying 1 mark 
each. 
4. Questions 5 – 12 in Section B are short-answer type questions carrying 2 mark each. 
5. Questions 13 – 23 in Section C are long-answer I type questions carrying 4 mark 
each. 
6. Questions 24 – 29 in Section D are long-answer type II questions carrying 6 mark 
each. 
 
SECTION – A 
 
1. Find the derivative of cos[sin v x]. 
 
2. Write negation of : “Either he is bald or he is tall.”  
 
3. Express 
6
i ?
 in the form of b or bi where b is a real number.  
OR 
Find modulus of sin ? – i cos ?. 
 
4. Two coins tossed simultaneously, find the probability that getting two heads. 
 
                                                                     SECTION – B 
 
5. A and B are sub-sets of U where U is universal set containing 700 elements. n(A) = 200, 
n(B) = 300 and n (A n B) = 100. Find n(A’ n B’). 
 
6. If the function f : N ? N is defined by f(x) = vx then find 
? ?
? ? ? ?
f 25
f 16 f 1 ?
. 
OR 
If f(x) = x
2
 – 1 and g(x) = vx find f ° g(x) =? 
 
 
 
  
 
CBSE XI | Mathematics 
Sample Paper – 6 
 
     
7. Find the range of the function f(x) = |x – 3| 
OR 
Let a and B be two sets such that : n(A) = 50, n(A ? B) = 60 and n(A n B) = 10. 
Find n(B) and n(A – B). 
 
8. Let A = {6, 8} and B = {3, 5}. Write A × B and A × A. 
 
9. 
cos A sin A 1
Prove that:
1 tan A 1 cot A cosA sin A
? ? ? ?
??
? ? ? ?
? ? ?
? ? ? ?
 
OR 
Prove that tan
4
 ? + tan
2
 ? = sec
4
 ? - sec
2
 ?  
 
10. By giving an example, show that the following statement is false.   
“If n is an odd integer, then n is prime.” 
 
11. If a, b, c are in GP then prove that log a
n
, log b
n
 and log c
n
 are in AP. 
 
12. The focal distance of a point on the parabola y
2
 = 12x is 4. Find the abscissa of this point. 
 
SECTION – C 
 
13. If tan (pcos ?) = cot (psin ?) prove that
1
cos
4
22
? ??
? ? ? ?
??
??
. 
 
 
14. Let a relation R1 on the set of R of all real numbers be defined as (a, b) ? R1 ? 
1 + ab > 0 for all a, b ?R. Show that (a, a) ? R1 for all a ? R and (a, b) ? R1 ?                           
(b, a) ? R1 for all a, b ?R. 
 
15. Prove that 
4
2 3 4 1
cos cos cos cos
9 9 9 9 2
? ? ? ?
? . 
 
16. If x = a + b, y =ab ? ? ? , z = ab ? ? ? where , ?? are complex cube root of unity. Show 
that xyz = a
3
 + b
3
. 
 
17. A bag contains 7 white, 5 black and 4 red balls. If two balls are drawn at random from 
the bag, find the probability that they are not of the same colour. 
 
18. The sums of first p, q, r terms of an AP are a, b, c respectively. Prove that  
? ? ? ? ? ?
a b c
q r r p p q 0
p q r
? ? ? ? ? ?  
 
  
 
CBSE XI | Mathematics 
Sample Paper – 6 
 
     
19. How many different numbers can be formed with the digits 1, 3, 5, 7, 9 when takes all 
at a time, and what is their sum? 
 
 
OR 
 A student is to answer 10 out of 13 questions in an examination such that he must 
choose at least 4 from the first five questions. Find the number of choices available to 
him. 
 
20. Find all the points on the line x + y = 4 that lie at a unit distance from the line 4x + 3y = 
10. 
OR 
        Find the equation of the internal bisector of angle BAC of the triangle ABC whose 
vertices A, B, C are (5, 2), (2, 3) and (6, 5) respectively. 
 
21. If in a ?ABC, 
? ?
? ?
sin A B
sin A
sinC sin B C
?
?
?
 prove that a
2
, b
2
, c
2
 are in AP. 
OR 
 Prove that 
cos5x cos4x
cos2x cosx
1 2cos3x
?
? ? ?
?
 
 
22. Find the value of k, if 
4 3 3
22
x 1 x k
x 1 x k
lim lim
x 1 x k
??
??
?
??
                  
 
23. Using binomial theorem, prove that 6
n
 – 5n always leaves the remainder 1 when 
divided by 25. 
 
SECTION – D 
 
24. Prove that  
1. tan3A tan2AtanA = tan3A – tan2A – tanA  
2. cotAcot2A – cot2Acot3A – cot3AcotA = 1 
OR 
If A = cos
2
 ? + sin
4
 ? prove that 
3
A1
4
?? for all values of ?. 
 
25. Find the mean deviation about the median for the following data: 
x 10 15 20 25 30 35 40 45 
f 7 3 8 5 6 8 4 9 
 
Page 4


  
 
CBSE XI | Mathematics 
Sample Paper – 6 
 
  w   
CBSE Board 
Class XI Mathematics 
Sample Paper – 6 
Time: 3 hrs  Total Marks: 100 
      
General Instructions:  
1. All questions are compulsory. 
2. The question paper consist of 29 questions. 
3. Questions 1 – 4 in Section A are very short answer type questions carrying 1 mark 
each. 
4. Questions 5 – 12 in Section B are short-answer type questions carrying 2 mark each. 
5. Questions 13 – 23 in Section C are long-answer I type questions carrying 4 mark 
each. 
6. Questions 24 – 29 in Section D are long-answer type II questions carrying 6 mark 
each. 
 
SECTION – A 
 
1. Find the derivative of cos[sin v x]. 
 
2. Write negation of : “Either he is bald or he is tall.”  
 
3. Express 
6
i ?
 in the form of b or bi where b is a real number.  
OR 
Find modulus of sin ? – i cos ?. 
 
4. Two coins tossed simultaneously, find the probability that getting two heads. 
 
                                                                     SECTION – B 
 
5. A and B are sub-sets of U where U is universal set containing 700 elements. n(A) = 200, 
n(B) = 300 and n (A n B) = 100. Find n(A’ n B’). 
 
6. If the function f : N ? N is defined by f(x) = vx then find 
? ?
? ? ? ?
f 25
f 16 f 1 ?
. 
OR 
If f(x) = x
2
 – 1 and g(x) = vx find f ° g(x) =? 
 
 
 
  
 
CBSE XI | Mathematics 
Sample Paper – 6 
 
     
7. Find the range of the function f(x) = |x – 3| 
OR 
Let a and B be two sets such that : n(A) = 50, n(A ? B) = 60 and n(A n B) = 10. 
Find n(B) and n(A – B). 
 
8. Let A = {6, 8} and B = {3, 5}. Write A × B and A × A. 
 
9. 
cos A sin A 1
Prove that:
1 tan A 1 cot A cosA sin A
? ? ? ?
??
? ? ? ?
? ? ?
? ? ? ?
 
OR 
Prove that tan
4
 ? + tan
2
 ? = sec
4
 ? - sec
2
 ?  
 
10. By giving an example, show that the following statement is false.   
“If n is an odd integer, then n is prime.” 
 
11. If a, b, c are in GP then prove that log a
n
, log b
n
 and log c
n
 are in AP. 
 
12. The focal distance of a point on the parabola y
2
 = 12x is 4. Find the abscissa of this point. 
 
SECTION – C 
 
13. If tan (pcos ?) = cot (psin ?) prove that
1
cos
4
22
? ??
? ? ? ?
??
??
. 
 
 
14. Let a relation R1 on the set of R of all real numbers be defined as (a, b) ? R1 ? 
1 + ab > 0 for all a, b ?R. Show that (a, a) ? R1 for all a ? R and (a, b) ? R1 ?                           
(b, a) ? R1 for all a, b ?R. 
 
15. Prove that 
4
2 3 4 1
cos cos cos cos
9 9 9 9 2
? ? ? ?
? . 
 
16. If x = a + b, y =ab ? ? ? , z = ab ? ? ? where , ?? are complex cube root of unity. Show 
that xyz = a
3
 + b
3
. 
 
17. A bag contains 7 white, 5 black and 4 red balls. If two balls are drawn at random from 
the bag, find the probability that they are not of the same colour. 
 
18. The sums of first p, q, r terms of an AP are a, b, c respectively. Prove that  
? ? ? ? ? ?
a b c
q r r p p q 0
p q r
? ? ? ? ? ?  
 
  
 
CBSE XI | Mathematics 
Sample Paper – 6 
 
     
19. How many different numbers can be formed with the digits 1, 3, 5, 7, 9 when takes all 
at a time, and what is their sum? 
 
 
OR 
 A student is to answer 10 out of 13 questions in an examination such that he must 
choose at least 4 from the first five questions. Find the number of choices available to 
him. 
 
20. Find all the points on the line x + y = 4 that lie at a unit distance from the line 4x + 3y = 
10. 
OR 
        Find the equation of the internal bisector of angle BAC of the triangle ABC whose 
vertices A, B, C are (5, 2), (2, 3) and (6, 5) respectively. 
 
21. If in a ?ABC, 
? ?
? ?
sin A B
sin A
sinC sin B C
?
?
?
 prove that a
2
, b
2
, c
2
 are in AP. 
OR 
 Prove that 
cos5x cos4x
cos2x cosx
1 2cos3x
?
? ? ?
?
 
 
22. Find the value of k, if 
4 3 3
22
x 1 x k
x 1 x k
lim lim
x 1 x k
??
??
?
??
                  
 
23. Using binomial theorem, prove that 6
n
 – 5n always leaves the remainder 1 when 
divided by 25. 
 
SECTION – D 
 
24. Prove that  
1. tan3A tan2AtanA = tan3A – tan2A – tanA  
2. cotAcot2A – cot2Acot3A – cot3AcotA = 1 
OR 
If A = cos
2
 ? + sin
4
 ? prove that 
3
A1
4
?? for all values of ?. 
 
25. Find the mean deviation about the median for the following data: 
x 10 15 20 25 30 35 40 45 
f 7 3 8 5 6 8 4 9 
 
  
 
CBSE XI | Mathematics 
Sample Paper – 6 
 
     
26. 
4 x x x
If x   and  tanx ,find  sin , cos ,  tan .
2 3 2 2 2
?
? ? ? ? ?
  
 
 
27. Solve the following system of inequalities graphically:  
3x + 2y ? 150; x + 4y ? 80; x  ? 15; x ? 0; y ? 0 
OR 
 
       How many litres of water will have to be added to 1125 litres of the 45% solution of 
acid so that the resulting mixture will contain more than 25% but less than 30% acid 
content? 
 
28. If the coefficients of a
r – 1
, a
r
 and a
r + 1
 in the binomial expansion of (1 + a)
n
 are in AP, 
prove that n
2
 – n(4r + 1) + 4r
2
 – 2 = 0 
 
29. Along a road lie an odd number of stones placed at intervals of 10 m. These stones have 
to be assembled around the middle stone. A person can carry only one stone at a time. 
A man carried the job with one of the end stones by carrying them in succession. In 
carrying all the stones he covered a distance of 3 km. Find the number of stones. 
OR 
       Find the sum of an infinitely decreasing GP, whose first term is equal to b +2 and the 
common ratio to 2/c, where b is the least value of the product of the roots of the 
equation (m
2
 + 1)x
2
 – 3x + (m
2
 + 1)
2
 = 0 and c is the greatest value of the sum of its 
roots.
 
  
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FAQs on Sample Question Paper 6 - Math, Class 11 - Mathematics (Maths) Class 11 - Commerce

1. What are the important topics covered in the Class 11 Math exam?
Ans. The important topics covered in the Class 11 Math exam include sets, relations, functions, trigonometry, sequences and series, limits and derivatives, mathematical reasoning, statistics, and probability.
2. How can I prepare effectively for the Class 11 Math exam?
Ans. To prepare effectively for the Class 11 Math exam, you can follow these tips: - Understand the concepts and theories thoroughly. - Practice solving a variety of problems from each topic. - Create a study schedule and allocate specific time for each topic. - Refer to textbooks, class notes, and online resources for additional practice materials. - Seek help from your teacher or classmates if you have any doubts or difficulties. - Take regular breaks during your study sessions to avoid burnout.
3. Are there any recommended reference books for Class 11 Math exam preparation?
Ans. Yes, there are several recommended reference books for Class 11 Math exam preparation. Some popular ones include: - "Mathematics for Class 11" by R.D. Sharma - "NCERT Exemplar Problems: Solutions Mathematics Class 11" by Disha Experts - "Mathematics for Class 11 (Set of 2 Volumes)" by R.D. Sharma - "NCERT Solutions Mathematics Class 11" by Disha Experts
4. How can I improve my problem-solving skills for the Class 11 Math exam?
Ans. To improve your problem-solving skills for the Class 11 Math exam, you can follow these strategies: - Understand the problem statement thoroughly before attempting to solve it. - Break down complex problems into smaller, manageable steps. - Practice solving a variety of problems from different topics. - Analyze your mistakes and learn from them. - Seek help from your teacher or classmates if you're stuck on a problem. - Try to solve problems using different methods and approaches to enhance your problem-solving abilities.
5. Are there any online resources or websites that can help in Class 11 Math exam preparation?
Ans. Yes, there are several online resources and websites that can help in Class 11 Math exam preparation. Some popular ones include: - Khan Academy: Offers video lessons and practice exercises for various math topics. - NCERT Solutions: Provides solutions to NCERT textbooks and exemplar problems. - TopperLearning: Offers study materials, video lessons, and practice tests. - Vedantu: Provides live online classes and doubt-solving sessions. - ExamFear: Offers video lessons and practice questions for CBSE and other board exams.
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