Question

A box contains 20 cards numbered from 1 to 20. A card is drawn random
from the box. Find the probability that the number on the drawn card is
(i)
divisible by 2 or 3 ​

Answer 1

Answer:

Total possibilities = 20.

Divisible by 2 or 3 (you will more options as or is mentioned and so need to add up all those numbers which are divisible by both 2 and 3 and the repeated ones need to count once)

then the possibilities are,

2,3,4,6,8,9,10,12,14,15,16,18,20 = 13 possibilities.

Probability (divided by 2 or 3) = 13/20.

Hope it helps.

Mark Brainer.

Thanks.

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Teacher.