Question

nine coins are tossed once, find the probability to get at least two heads
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Answer 1

Answer:

4.5 times it may get 5or3 it is based on it

Answer 2

Answer:

The probability will be 251/256

Step-by-step explanation:

Total number of outcome will be 2^n

where n is the total numbers of coins.

Since the number of coins tossed is 9 ,

so,total possible outcomes will be 2^9 = 512 .

The probability of each getting head or tail is equal to 1/2 .

So probability for atleast head = 1 - ( P( only one head) + P(no head ))

P(only one head ) = 9/512

P(no head ) = 1/512

P(atleast two heads ) = 1 - 10/512 = 502/512= 251/256

Hence, the required probability will be 251/256.

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