The probability that a student knows the answer, is: Option 1: 1/3 Option 2: 1/2 Option 3: 5/6 Option 4: 1

The answer is '1/2'. View full solution:

CUET Mathematics - The probability that a student knows the answer, is: | PYQs + Solutions

CUET Mathematics 2022 23 Aug Shift 1

Algebra

Easy

$\frac{1}{3}$

$\frac{1}{2}$

$\frac{5}{6}$

$1$

✅ Correct Option: 2

Related questions:

3 June Shift 1

Which of the following statements are correct?

(A) The mean and variance of the Poisson distribution are equal.

(B) The mean and variance of a Binomial distribution are equal.

(C) An unbiased die is thrown again and again until two sixes are obtained, then the probability of obtaining the second six in the 3rd throw is $\frac{5}{108}$ .

(D) If the variance of a Poisson distribution is 2, then P(X = 2) = $2e^{-2}$

Choose the correct answer from the options given below:

6 Aug Shift 2

There are three identical boxes I, II and III, each containing two balls. In box I, both balls are red, In box II, both balls are blue and box III contains one blue ball and one red ball. A boy randomly chooses a box and takes out a ball at random from it. If the ball is red, then the probability that the other ball in the box is also red colour is:

25 May Shift 1

Two dice are thrown simultaneously. If X denotes the number of sixes, then the variance of X is:

CUET Mathematics 2022 23 Aug Shift 1 PYQs

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