1.

There are 27 cards having number1 to 27. Twocards are pickedat randomone by one , what is the probability thatsumof number on these 2 cardsis odd ?

Answer»

`(13)/(27)`
`(8)/(13)`
`(182)/(729)`
`(14)/(27)`

SOLUTION :Odd sumis there whenonecard drawn is odd andanotherprobability
`=((13)/(27)XX(14)/(26))+((14)/(27)xx(13)/(26))=(14)/(27)`


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