If x = 1 is a root of equation x2 – Kx + 5 = 0 then value of K is
DIRECTION : In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : No. of spherical balls that can be made out of a solid cube of lead whose edge is 44 cm, each ball being 4 cm. in diameter, is 2541
Reason : Number of balls
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If one zero of the polynomial p(x) = (a2+9)x2+45x+6a is reciprocal of the other, then the value of ‘a’ is
If p, q, r, s, t are the terms of an A.P. with common difference -1 the relation between p and t is:
The probability that a number selected at random from the numbers 1, 2, 3 ... 15 is a multiple of 4 is
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Sum of first hundred even natural numbers divisible by 5 is 500.
Reason (R): Sum of first n terms of an A.P is given l is last term
If n is a rational number, then 52n − 22n is divisible by
The first, second and last terms of an A.P. are a,b and 2a. The number of terms in the A.P. is :
The LCM of two numbers is 1200. Which of the following cannot be their HCF?
The probability of getting a prime number in single throw of a dice is:
Two natural numbers whose difference is 66 and the least common multiple is 360, are:
In the formula for mode of a grouped data, mode = where symbols have their usual meaning f0 represents :
If the sum of the areas of two circles with radii R1 and R2 is equal to the area of a circle of radius R, then
The sum of odd numbers between 0 and 50 is
If a - b = 3 and a2 + b2 = 29, find the value of ab.
'If you are given 100 rupees, what will you do?' The objective of asking this type of question is
"A young child responds to a new situation on the basis of the response made by him/ her in a similar situation as in the past". This is related to:
Which of the following is a significant cause for the failure of a teacher?
What should a teacher keep in mind while choosing the method of teaching a subject?
The greatest cause for failure of a new teacher can be found in the area of
How can teachers facilitate understanding of complex concepts in children?
Which Union Ministry launched the ‘ULLAS (Understanding Lifelong Learning for All in Society) initiative’?
Which organization is set to launch ESA's Solar Study Mission Proba-3?
A man standing on the terrace of a building watches a car speeding towards him. If at that particular instant the car is 200 m away from the building makes an angle of depression of 60° with the man’s eye and after 8 seconds the angle of depression is 30°, what is the speed of the car?
A word with letters jumbled has been given. Choose the correct order of letters which are required to form the correct word.
Jumbled word: TESIDNRE