Question

Cards marked with numbers 13,14,15,....,60 are placed in a box and mixed thoroughly. One card is drawn at random from the box. Find the probability that number on the card drawn is neither divisible by 5 nor by 10

Answer 1

Answer:

No. of cards not divisible by 5 and 10 = 10

Probability of card which is not divisible by 5 nor 10 =

P(E)= 10/48