Question

A box contains 20 cards which are numbered from 1 to 20. If one card is drawn random from the box , find the probability of getting : multiple of 4 and 5
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Answer 1

Answer:

there is only one card in the box which is multiple of 4 and 5 i.e. 20

no.of ways of drawing that card is 1.

no. of ways of drawing one card out of 20 cards is 20.

so, the probability is 1/20