CUET Mathematics - The standard deviation of the number of tails in three tosses of a coin is: | PYQs + Solutions

CUET Mathematics 2025 19 May Shift 1

Algebra

Medium

applied

$\frac{3}{4}$

$\frac{3}{2}$

$\frac{3}{\sqrt{2}}$

$\frac{\sqrt{3}}{2}$

✅ Correct Option: 4

Related questions:

30 May Shift 2

If A and B are two events such that $P(A) = \frac{1}{3}$ , $P(B) = \frac{1}{2}$ and $P(A \cap B) = \frac{1}{4}$ , then which of the following statements are true?

(A) A and B are independent events

(B) $P(A | B) = \frac{1}{4}$

(D) $P(A | B) = \frac{1}{4}$

Choose the correct answer from the options given below:

14 May Shift 2

The normal distribution curve is symmetrical about

[ $\mu$ = mean, $\sigma$ = standard deviation]

21 May Shift 2

A letter is known to have come from either TATAPUR or from CHAKRATA. On the envelope, only two letters 'TA' are visible consecutively. The probability that the letter has come from CHAKRATA is:

CUET Mathematics 2025 19 May Shift 1 PYQs

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