Question

Cards with numbers 1,2,3...........,100 are placed in a box and mixed thoroughly. One card is drawn. What is the probability that the card drawn is -
a) a multiple of 5 or 7?

Answer 1

from 1 to 100 the total no of multiples of :-

5 = 20

7= 14

probablity of getting a multiple of 5 = 20/100 = 1/5

probablity of getting a multiple of 7 = 14/100=7/50

hope it helps

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Answer 2

Answer:

a prime number less than thirty