29. The probability of a bomb hitting a bridge is 0.5 and 2 direct hits are needed to destroy it.The least number of bombs required so that the prob of bridge being destroyed is greater than 0.9 is

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The probability of a bomb hitting a bridge is 1/2 and two direct hits are needed to destroy it. Find the least number of bombs required so that the probability of the bridge being destroyed is greater than 0.9.___

The probability of a bomb hitting a bridge is $\frac{1}{2}$ and two direct hits are needed to destroy it. The least number of bombs required so that the probability of the bridge being destroyed is greater then 0.9, is

Q. The probability of a bomb hitting a bridge is

1 / 2

. Two direct hits are needed to destroy it. The number of bombs required so that the probability of the bridge being destroyed is greater that

0.9

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\frac{1}{2}

and two direct hits are needed to destroy it. The least number of bombs required so that the probability of the bridge beeing destroyed is greater then 0.9, is

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