CUET Preparation Today
CUET
-- Mathematics - Section B2
Numbers, Quantification and Numerical Applications
A random variable X takes only 3 values {0, 1, 2} with $P(X=0)=P(X=1).$ If $E(X^2)=1+E(X)$ then the var(X) is :
$\frac{3}{4}$
1
$\frac{11}{16}$
$\frac{9}{16}$
