Saved Bookmarks
| 1. |
Two digits numbers are formed from the digits5,6,7 without repetition.then find the probability that the numbers so formed are divisble by 3. |
|
Answer»
s={56,57,65,67,75,76} n(s)= 6 condition for event A: number DIVISIBLE by 3 A={57,75} n(A)= 2
p(A) = n(A)÷n(S) p(A) = 2÷6 p(A) = 1÷3 |
|