Download, print and study this document offline |
Page 1 CBSE XI | Mathematics Sample Paper – 10 Solution CBSE Board Class XI Mathematics Sample Paper – 10 Solution SECTION – A 1. ? ? xx x0 xx x0 xx x0 xx x0 32 lim x 3 1 2 1 lim x 3 1 2 1 lim x 3 1 2 1 lim xx log3 log2 3 log 2 ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ?? ?? ?? ?? ? 2. If Mohan is not poor then he is not a poet. 3. ? ? ? ? ? ? ? ? 592 590 588 586 584 582 580 578 576 574 584 8 6 4 2 574 8 6 4 2 584 574 10 5 2 5 i i i i i i i i i i i i i i i 1 i i i i i 1 i i i 1 1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? OR 2 25 9 25 1 9 1 5i 3i 15i 15 ? ? ? ? ? ? ? ? ? ? ? ? ? ? Page 2 CBSE XI | Mathematics Sample Paper – 10 Solution CBSE Board Class XI Mathematics Sample Paper – 10 Solution SECTION – A 1. ? ? xx x0 xx x0 xx x0 xx x0 32 lim x 3 1 2 1 lim x 3 1 2 1 lim x 3 1 2 1 lim xx log3 log2 3 log 2 ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ?? ?? ?? ?? ? 2. If Mohan is not poor then he is not a poet. 3. ? ? ? ? ? ? ? ? 592 590 588 586 584 582 580 578 576 574 584 8 6 4 2 574 8 6 4 2 584 574 10 5 2 5 i i i i i i i i i i i i i i i 1 i i i i i 1 i i i 1 1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? OR 2 25 9 25 1 9 1 5i 3i 15i 15 ? ? ? ? ? ? ? ? ? ? ? ? ? ? CBSE XI | Mathematics Sample Paper – 10 Solution 4. The total number of elementary events associated to the random experiment of thrown a dice is 6 n where n is the number of throws. Hence, the total number of elementary events associated to the random experiment of throwing a three dice together is 6 3 = 216. SECTION – B 5. n(A) = 3, n(B) = 2 ? n(A × B) = 3 × 2 = 6 The number of subsets of A × B = 2 6 = 64 The number of relations from A into B = 64 6. f(x) = = sin [log (x + 2 x1 ? )] f(-x) = sin [log (-x + 2 x1 ? )] = ? ? 2 2 2 x 1 x sin log x 1 x x 1 x ?? ?? ?? ?? ?? ? ? ? ?? ?? ?? ?? ?? = 2 1 sin log x 1 x ?? ?? ?? ?? ?? ?? ?? ?? ?? = ? ? 1 2 sin log x 1 x ? ?? ?? ?? ?? = ? ? 2 sin log x 1 x ?? ? ? ? ?? ?? = ? ? 2 sin log x 1 x ?? ? ? ? ?? ?? = -f(x) OR f(x) = 1x 1x ? ? ? ? ? 1 tan f tan 1 tan ?? ?? ?? ? ? 1 tan 1 1 tan f f tan 1 tan 1 1 tan ?? ? ?? ?? ?? ?? ?? ? ?? ? ? ? ? 1 tan 1 tan f f tan 1 tan 1 tan ? ? ? ? ? ?? ?? ?? ? ? ? ? ? ? ? 2 f f tan cot 2tan ?? ? ? ? ? ? ?? ?? Page 3 CBSE XI | Mathematics Sample Paper – 10 Solution CBSE Board Class XI Mathematics Sample Paper – 10 Solution SECTION – A 1. ? ? xx x0 xx x0 xx x0 xx x0 32 lim x 3 1 2 1 lim x 3 1 2 1 lim x 3 1 2 1 lim xx log3 log2 3 log 2 ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ?? ?? ?? ?? ? 2. If Mohan is not poor then he is not a poet. 3. ? ? ? ? ? ? ? ? 592 590 588 586 584 582 580 578 576 574 584 8 6 4 2 574 8 6 4 2 584 574 10 5 2 5 i i i i i i i i i i i i i i i 1 i i i i i 1 i i i 1 1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? OR 2 25 9 25 1 9 1 5i 3i 15i 15 ? ? ? ? ? ? ? ? ? ? ? ? ? ? CBSE XI | Mathematics Sample Paper – 10 Solution 4. The total number of elementary events associated to the random experiment of thrown a dice is 6 n where n is the number of throws. Hence, the total number of elementary events associated to the random experiment of throwing a three dice together is 6 3 = 216. SECTION – B 5. n(A) = 3, n(B) = 2 ? n(A × B) = 3 × 2 = 6 The number of subsets of A × B = 2 6 = 64 The number of relations from A into B = 64 6. f(x) = = sin [log (x + 2 x1 ? )] f(-x) = sin [log (-x + 2 x1 ? )] = ? ? 2 2 2 x 1 x sin log x 1 x x 1 x ?? ?? ?? ?? ?? ? ? ? ?? ?? ?? ?? ?? = 2 1 sin log x 1 x ?? ?? ?? ?? ?? ?? ?? ?? ?? = ? ? 1 2 sin log x 1 x ? ?? ?? ?? ?? = ? ? 2 sin log x 1 x ?? ? ? ? ?? ?? = ? ? 2 sin log x 1 x ?? ? ? ? ?? ?? = -f(x) OR f(x) = 1x 1x ? ? ? ? ? 1 tan f tan 1 tan ?? ?? ?? ? ? 1 tan 1 1 tan f f tan 1 tan 1 1 tan ?? ? ?? ?? ?? ?? ?? ? ?? ? ? ? ? 1 tan 1 tan f f tan 1 tan 1 tan ? ? ? ? ? ?? ?? ?? ? ? ? ? ? ? ? 2 f f tan cot 2tan ?? ? ? ? ? ? ?? ?? CBSE XI | Mathematics Sample Paper – 10 Solution 7. Taking ? = x we get area of sector AOB = 2 1 rx 2 22 1 r x s 2 ? 2 2 2 1 r x r x 2 ? ? S = rx 1 x rad 2 ? OR 5 5 180 300 33 ?? ? ? ? ? ? ? 1 c = 180 ? ?? ?? ? ?? 180 4 4 720 ? ? ? ? ? ? ? 8. i. A = {L, O, Y, A} and B = {A, L, O, Y} Clearly A = B ii. C = {x: x ?Z and x 2 = 36} = {6, -6} So, C is a finite set. 9. In triangle ABC, if a = 3, b = 5 and c = 7 2 2 2 b c a 25 49 9 65 13 cosA 2bc 2 5 7 70 14 ? ? ? ? ? ? ? ? ?? 2 2 2 a b c 9 25 49 15 1 cosC 2ab 2 3 5 30 2 ? ? ? ? ? ? ? ? ? ? ?? OR ? ? ? ? 22 22 2 2 2 2 2 2 2 2 22 2 CC a b cos a b sin 22 C C C C C C a cos sin b cos sin 2ab cos sin 2 2 2 2 2 2 a b 2abcosC c ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 10. If a number n 2 is even then n is even. Page 4 CBSE XI | Mathematics Sample Paper – 10 Solution CBSE Board Class XI Mathematics Sample Paper – 10 Solution SECTION – A 1. ? ? xx x0 xx x0 xx x0 xx x0 32 lim x 3 1 2 1 lim x 3 1 2 1 lim x 3 1 2 1 lim xx log3 log2 3 log 2 ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ?? ?? ?? ?? ? 2. If Mohan is not poor then he is not a poet. 3. ? ? ? ? ? ? ? ? 592 590 588 586 584 582 580 578 576 574 584 8 6 4 2 574 8 6 4 2 584 574 10 5 2 5 i i i i i i i i i i i i i i i 1 i i i i i 1 i i i 1 1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? OR 2 25 9 25 1 9 1 5i 3i 15i 15 ? ? ? ? ? ? ? ? ? ? ? ? ? ? CBSE XI | Mathematics Sample Paper – 10 Solution 4. The total number of elementary events associated to the random experiment of thrown a dice is 6 n where n is the number of throws. Hence, the total number of elementary events associated to the random experiment of throwing a three dice together is 6 3 = 216. SECTION – B 5. n(A) = 3, n(B) = 2 ? n(A × B) = 3 × 2 = 6 The number of subsets of A × B = 2 6 = 64 The number of relations from A into B = 64 6. f(x) = = sin [log (x + 2 x1 ? )] f(-x) = sin [log (-x + 2 x1 ? )] = ? ? 2 2 2 x 1 x sin log x 1 x x 1 x ?? ?? ?? ?? ?? ? ? ? ?? ?? ?? ?? ?? = 2 1 sin log x 1 x ?? ?? ?? ?? ?? ?? ?? ?? ?? = ? ? 1 2 sin log x 1 x ? ?? ?? ?? ?? = ? ? 2 sin log x 1 x ?? ? ? ? ?? ?? = ? ? 2 sin log x 1 x ?? ? ? ? ?? ?? = -f(x) OR f(x) = 1x 1x ? ? ? ? ? 1 tan f tan 1 tan ?? ?? ?? ? ? 1 tan 1 1 tan f f tan 1 tan 1 1 tan ?? ? ?? ?? ?? ?? ?? ? ?? ? ? ? ? 1 tan 1 tan f f tan 1 tan 1 tan ? ? ? ? ? ?? ?? ?? ? ? ? ? ? ? ? 2 f f tan cot 2tan ?? ? ? ? ? ? ?? ?? CBSE XI | Mathematics Sample Paper – 10 Solution 7. Taking ? = x we get area of sector AOB = 2 1 rx 2 22 1 r x s 2 ? 2 2 2 1 r x r x 2 ? ? S = rx 1 x rad 2 ? OR 5 5 180 300 33 ?? ? ? ? ? ? ? 1 c = 180 ? ?? ?? ? ?? 180 4 4 720 ? ? ? ? ? ? ? 8. i. A = {L, O, Y, A} and B = {A, L, O, Y} Clearly A = B ii. C = {x: x ?Z and x 2 = 36} = {6, -6} So, C is a finite set. 9. In triangle ABC, if a = 3, b = 5 and c = 7 2 2 2 b c a 25 49 9 65 13 cosA 2bc 2 5 7 70 14 ? ? ? ? ? ? ? ? ?? 2 2 2 a b c 9 25 49 15 1 cosC 2ab 2 3 5 30 2 ? ? ? ? ? ? ? ? ? ? ?? OR ? ? ? ? 22 22 2 2 2 2 2 2 2 2 22 2 CC a b cos a b sin 22 C C C C C C a cos sin b cos sin 2ab cos sin 2 2 2 2 2 2 a b 2abcosC c ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 10. If a number n 2 is even then n is even. CBSE XI | Mathematics Sample Paper – 10 Solution 11. f(x) is defined for all x satisfying 2 4 x 0 and x 1 0 ? ? ? ? ? ? ? ? x 4 0 and x 1 x 1 0 ? ? ? ? ? x 4 and x 1 or x 1 ? ? ? ? ? ? ? ? x , 1 1,4 ? ? ? ? ? Domain f = ? ? ? ? , 1 1,4 ? ? ? ? 12. x 2 + y 2 – 4x + 6y = 12 x 2 – 4x + y 2 + 6y = 12 x 2 – 4x + 4 + y 2 + 6y + 9 = 12 + 4 + 9 (x – 2) 2 + (y + 3) 2 = 25 (x – 2) 2 + [y – (-3) 2 ] = 5 2 Comparing with the equation (x – a) 2 + [y – b 2 ] = r 2 Radius of the circle is 5 units and centre is (2, -3). SECTION – C 13. Sin 75° = sin (45° + 30°) = sin 45°cos 30° + cos 45° sin 30° = 1 3 1 1 22 22 ??? = 31 22 ? Cos 75° = cos (45° + 30°) = cos 45° cos 30° – sin 45° sin 30° = 1 3 1 1 22 22 ? ? ? = 31 22 ? tan 15° = tan (45° – 30°) = tan45 tan30 1 tan45 tan30 ? ? ? ? ? ? = 1 1 3 1 1 3 ? ? Page 5 CBSE XI | Mathematics Sample Paper – 10 Solution CBSE Board Class XI Mathematics Sample Paper – 10 Solution SECTION – A 1. ? ? xx x0 xx x0 xx x0 xx x0 32 lim x 3 1 2 1 lim x 3 1 2 1 lim x 3 1 2 1 lim xx log3 log2 3 log 2 ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ?? ?? ?? ?? ? 2. If Mohan is not poor then he is not a poet. 3. ? ? ? ? ? ? ? ? 592 590 588 586 584 582 580 578 576 574 584 8 6 4 2 574 8 6 4 2 584 574 10 5 2 5 i i i i i i i i i i i i i i i 1 i i i i i 1 i i i 1 1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? OR 2 25 9 25 1 9 1 5i 3i 15i 15 ? ? ? ? ? ? ? ? ? ? ? ? ? ? CBSE XI | Mathematics Sample Paper – 10 Solution 4. The total number of elementary events associated to the random experiment of thrown a dice is 6 n where n is the number of throws. Hence, the total number of elementary events associated to the random experiment of throwing a three dice together is 6 3 = 216. SECTION – B 5. n(A) = 3, n(B) = 2 ? n(A × B) = 3 × 2 = 6 The number of subsets of A × B = 2 6 = 64 The number of relations from A into B = 64 6. f(x) = = sin [log (x + 2 x1 ? )] f(-x) = sin [log (-x + 2 x1 ? )] = ? ? 2 2 2 x 1 x sin log x 1 x x 1 x ?? ?? ?? ?? ?? ? ? ? ?? ?? ?? ?? ?? = 2 1 sin log x 1 x ?? ?? ?? ?? ?? ?? ?? ?? ?? = ? ? 1 2 sin log x 1 x ? ?? ?? ?? ?? = ? ? 2 sin log x 1 x ?? ? ? ? ?? ?? = ? ? 2 sin log x 1 x ?? ? ? ? ?? ?? = -f(x) OR f(x) = 1x 1x ? ? ? ? ? 1 tan f tan 1 tan ?? ?? ?? ? ? 1 tan 1 1 tan f f tan 1 tan 1 1 tan ?? ? ?? ?? ?? ?? ?? ? ?? ? ? ? ? 1 tan 1 tan f f tan 1 tan 1 tan ? ? ? ? ? ?? ?? ?? ? ? ? ? ? ? ? 2 f f tan cot 2tan ?? ? ? ? ? ? ?? ?? CBSE XI | Mathematics Sample Paper – 10 Solution 7. Taking ? = x we get area of sector AOB = 2 1 rx 2 22 1 r x s 2 ? 2 2 2 1 r x r x 2 ? ? S = rx 1 x rad 2 ? OR 5 5 180 300 33 ?? ? ? ? ? ? ? 1 c = 180 ? ?? ?? ? ?? 180 4 4 720 ? ? ? ? ? ? ? 8. i. A = {L, O, Y, A} and B = {A, L, O, Y} Clearly A = B ii. C = {x: x ?Z and x 2 = 36} = {6, -6} So, C is a finite set. 9. In triangle ABC, if a = 3, b = 5 and c = 7 2 2 2 b c a 25 49 9 65 13 cosA 2bc 2 5 7 70 14 ? ? ? ? ? ? ? ? ?? 2 2 2 a b c 9 25 49 15 1 cosC 2ab 2 3 5 30 2 ? ? ? ? ? ? ? ? ? ? ?? OR ? ? ? ? 22 22 2 2 2 2 2 2 2 2 22 2 CC a b cos a b sin 22 C C C C C C a cos sin b cos sin 2ab cos sin 2 2 2 2 2 2 a b 2abcosC c ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 10. If a number n 2 is even then n is even. CBSE XI | Mathematics Sample Paper – 10 Solution 11. f(x) is defined for all x satisfying 2 4 x 0 and x 1 0 ? ? ? ? ? ? ? ? x 4 0 and x 1 x 1 0 ? ? ? ? ? x 4 and x 1 or x 1 ? ? ? ? ? ? ? ? x , 1 1,4 ? ? ? ? ? Domain f = ? ? ? ? , 1 1,4 ? ? ? ? 12. x 2 + y 2 – 4x + 6y = 12 x 2 – 4x + y 2 + 6y = 12 x 2 – 4x + 4 + y 2 + 6y + 9 = 12 + 4 + 9 (x – 2) 2 + (y + 3) 2 = 25 (x – 2) 2 + [y – (-3) 2 ] = 5 2 Comparing with the equation (x – a) 2 + [y – b 2 ] = r 2 Radius of the circle is 5 units and centre is (2, -3). SECTION – C 13. Sin 75° = sin (45° + 30°) = sin 45°cos 30° + cos 45° sin 30° = 1 3 1 1 22 22 ??? = 31 22 ? Cos 75° = cos (45° + 30°) = cos 45° cos 30° – sin 45° sin 30° = 1 3 1 1 22 22 ? ? ? = 31 22 ? tan 15° = tan (45° – 30°) = tan45 tan30 1 tan45 tan30 ? ? ? ? ? ? = 1 1 3 1 1 3 ? ? CBSE XI | Mathematics Sample Paper – 10 Solution = 31 31 ? ? = 3 1 3 1 3 1 3 1 ?? ? ?? = 3 2 3 1 31 ?? ? = 4 2 3 2 ? = 23 ? 14. ? ? 1x f x log 1x ? ?? ? ?? ? ?? ? ? ? ? 1 a 1 b f a f b log log 1 a 1 b ?? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? 1 a 1 b log 1 a 1 b ?? ?? ?? ?? ?? ?? 1 b a ab log 1 b a ab ? ? ? ?? ? ?? ? ? ? ?? 1 ab b a log 1 ab b a ? ? ? ?? ? ?? ? ? ? ?? ba 1 1 ab log ba 1 1 ab ? ?? ? ?? ? ? ?? ? ?? ? ? ?? ab f 1 ab ? ?? ? ?? ? ?? ? ? ? ? ab f a f b f 1 ab ? ?? ?? ?? ? ?? where ? ? 1x f x log 1x ? ?? ? ?? ? ?? 15. i. x 2x 1 ?? ? ? ? ? f x x and g x 2x 1 ? ? ? Let domain of f(x) = A and domain of g(x) = B Thus, ? ? A 0, ?? and 1 B, 2 ?? ?? ? ? ?? Domain of x 2x 1 ?? = A n B = 1 , 2 ?? ? ? ? ?? ii. ? ? log x 2 3 x ? ? ? ? ? ? ? ? ? f x log x 2 and g x 3 x ? ? ? ?Read More
75 videos|238 docs|91 tests
|
1. What is the importance of studying mathematics in Class 11? |
2. How can I improve my performance in mathematics in Class 11? |
3. What are the important topics to focus on for the Class 11 mathematics exam? |
4. How can I manage time effectively during the Class 11 mathematics exam? |
5. Are there any additional resources available for Class 11 mathematics exam preparation? |
|
Explore Courses for Commerce exam
|