CUET Mathematics - A coin is tossed K times. If the probability of getting 3 heads is equal to the probability of getting 7 heads, then the probability of getting 8 tails is : | PYQs + Solutions

CUET Mathematics

Algebra

Medium

applied

$\frac{5}{512}$

$\frac{45}{2^{21}}$

$\frac{45}{1024}$

$\frac{210}{2^{21}}$

✅ Correct Option: 3

Related questions:

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If $X$ is a normal variate with mean 12 and standard deviation 4, then $P[X \ge 20]$ is:

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Match List-I with List-II

List-I	List-II
(A) $k$	(I) 7/22
(B) $P(X \geq 4)$	(II) 1/44
(C) $P(X < 4)$	(III) 95/22
(D) $E[X]$	(IV) 15/22

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The probabilities of occurrance of two events A and B are 0.45 and 0.20 respectively. The probability of their simultaneous occurrence is 0.06. The probability that neither A nor B occurs is

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