Question

Need quick help please!
Ben chooses a number from among the fist 20 counting numbers 1,2,......19,20. What is the probability that the number chosen is divisible by 4 or 5?

Answer 1

count the numbers that is divisible by 4: 4, 8, 12, 16, 20
count the numbers that is divisible by 5: 5, 10, 15

add them up and divide by 20.

Answer 2

it is not replaced @ParthKohli

Answer 3

\[\frac{5}{20} + \frac{3}{19}= ?\]

Answer 4

@dpaInc : So would it be 8/20?

Answer 5

8/20=2/5... one of those...:)

Answer 6

Thank you! :D