CUET Mathematics - The probability distribution of a random variable X is given as: P(X=x) = cases kx^2 & for & x=1,2,3 \\ 2kx & for & x=4,5,6 \\ 0 & otherwise cases Where k is an arbitrary constant, then E(X) is equal to: | PYQs + Solutions

CUET Mathematics 2026 15th May Shift 1

Applied Mathematics

Medium

applied

$\dfrac{55}{23}$

$\dfrac{23}{22}$

$\dfrac{15}{22}$

$\dfrac{95}{22}$

✅ Correct Option: 4

Related questions:

29th May Shift 1

The mean of the number of tails in three tosses of a coin is :

15 June Shift 2

A discrete random variable X has the following probability distribution :

X:	0	1	2	3	4	5
P(X):	b	3b	5b	3b	4b	6b

The value of b is :

18th May Shift 2

A pair of dice is thrown 5 times. If getting a total of 7 is considered a success, then

Match the LIST-I with LIST-II

LIST-I	LIST-II
A. Probability of no success	I. $26\left(\dfrac{1}{6}\right)^5$
B. Probability of 5 successes	II. $2\left(\dfrac{5}{6}\right)^5$
C. Probability of at least 4 successes	III. $\left(\dfrac{1}{6}\right)^5$
D. Probability of at most one success	IV. $\left(\dfrac{5}{6}\right)^5$

Choose the correct answer from the options given below:

CUET Mathematics 2026 15th May Shift 1 PYQs