1.

A box contains 100 bulbs, 20 of which are defective. 10 bulbs are selected for inspection. Find the probability that : (i) all 10 arc defective (ii) all 10 are good (iii) at least one is defective (iv) None is defective

Answer»

A box contains 100 bulbs, 20 of which are defective. 10 bulbs are selected for inspection. Find the probability that :

(i) all 10 arc defective

(ii) all 10 are good

(iii) at least one is defective

(iv) None is defective



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