Question

What is the probability that either two heads or three heads will be thrown if six fair coins are tossed at once?

Answer 1

Answer:The right answer will be

0. 546875

Step-by-step explanation:

When 6 coins are tossed , the total number of outcomes is 2*2*2*2*2*2= 64

The number of ways of getting two heads are 6!/2!*4!=15.

The probability of getting two heads P(A) is 15/64 .

In the same way, the probability of getting three heads P( B) is 5/16.

Now, P(A)+P(B)= 0.546875