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In a sample of 100 light bulb 2% are defective. Find (i) At least one light bulb is defective; (ii) Exactly seven light bulbs are

In a sample of 100 light bulb 2% are defective.

Find

(i) At least one light bulb is defective;

(ii) Exactly seven light bulbs are defectives; and

(iii) P(1 < x < 8).

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