Question

A number is chosen at random from the first 100 positive integers. Find the probability that the number is a multiple of 7.

7/50
13/100
3/20

Answer 1

first, do you know all the multiples of 7 in the first 100 integers?

Answer 2

ehh no

Answer 3

okay well the first multiple of 7 is 7, so just count 7 and you get 14, and so on with every number until you reach the last multiple of 7 less than 100

Answer 4

ohhhh

Answer 5

i got it thanks

Answer 6

so what answer did you come up with?

Answer 7

7/50

Answer 8

yes, 13/100 is close but there are 14 multiple of 7 between 1 and 100, so it would be 14/100 which reduces to 7'/50

Answer 9

thank you i like the help instead of just giving the answer