In  a family the husband tells a lie in 30% cases and the wife in 35% cases. Find the probability that both contradict each other on the same fact.

Explanation

According to questions,:

The husband tells lie in 30 %=0.3 cases.

The wife tells lie in 35 %=0.35 cases.

The probability that they both will contradict is,

P=P (husband lies but wife dont t)+P (wife lies but husband don't)


`=0.3(1-0.35)+(0.35)(1-0.3) `

`=0.195+0.245 `

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