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| 1. |
A die is thrown 5 times. If getting an even number is a success, what is the probability of 3 successes ? |
| Answer» SOLUTION :P=p(EVEN number)`=3/6=1/2` q=p(non even number)`=1/2` `THEREFORE`P(SUCCESS)=`p=1/2`,p(failure)=`q=1/2` p(3 success in 5 THROWS)`=^5C_3p^3q^3=10.(1/2)^5=10/32=5/16` | |