1
MHT CET 2021 23rd September Evening Shift
+2
-0

Let two cards are drawn at random from a pack of 52 playing cards. Let X be the number of aces obtained. Then the value of E(X) is

A
$$\frac{5}{13}$$
B
$$\frac{1}{13}$$
C
$$\frac{2}{13}$$
D
$$\frac{37}{221}$$
2
MHT CET 2021 23rd September Evening Shift
+2
-0

A fair coin is tossed 100 times. The probability of getting a head for even number of times is

A
$$\frac{1}{2}$$
B
$$\frac{3}{8}$$
C
$$\frac{1}{8}$$
D
$$\frac{3}{4}$$
3
MHT CET 2021 23rd September Evening Shift
+2
-0

If the function defined by $$f(x)=K(x-x^2)$$ if $$0 < x < 1=0$$, otherwise is the p.d.f. of a r.v.X, then the value of $$P\left(X<\frac{1}{2}\right)$$ is

A
$$\frac{1}{2}$$
B
$$\frac{1}{3}$$
C
$$\frac{1}{4}$$
D
$$\frac{2}{3}$$
4
MHT CET 2021 23th September Morning Shift
+2
-0

The probability distribution of the number of doublets in four throws of a pair of dice is given by

A
$$\mathrm{X}$$ 0 1 2 3 4
$$\mathrm{P(X) :}$$ $$\frac{1}{5}$$ $$\frac{1}{5}$$ $$\frac{1}{5}$$ $$\frac{1}{5}$$ $$\frac{1}{5}$$
B
$$\mathrm{X}$$ 0 1 2 3
$$\mathrm{P(X) :}$$ $$\frac{1}{4}$$ $$\frac{1}{4}$$ $$\frac{1}{4}$$ $$\frac{1}{4}$$
C
$$\mathrm{X}$$ 1 2 3 4
$$\mathrm{P(X) :}$$ $$\frac{1}{4}$$ $$\frac{1}{4}$$ $$\frac{1}{4}$$ $$\frac{1}{4}$$
D
$$\mathrm{X}$$ 0 1 2 3 4
$$\mathrm{P(X) :}$$ $$\frac{625}{1296}$$ $$\frac{125}{324}$$ $$\frac{25}{216}$$ $$\frac{5}{324}$$ $$\frac{1}{1296}$$
EXAM MAP
Medical
NEET