A fair coin is tossed 14 times. What is the probability of getting exactly 4 heads?
एक fair coin को 14 बार toss किया गया। exactly 4 heads आने की probability क्या है?
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Correct Answer
C. 1001 / 16384
ExplanationStep 1: this is a binomial probability with p=1/2. Step 2: probability of exactly 4 heads is C(14,4)(1/2)^14 = 1001/16384 = 1001/16384. Step 3: tip: for a fair coin, every sequence is equally likely.
Step 1: यह binomial probability है जहाँ p=1/2। Step 2: exactly 4 heads की probability C(14,4)(1/2)^14 = 1001/16384 = 1001/16384। Step 3: tip: fair coin में हर sequence की probability समान होती है।