Probability that a randomly chosen two digit positive integer is divisible by 3 or 5.

Feb 2008
297
7
What is the probability that a randomly chosen two digit positive integer is divisible by 3 or 5.
 

Isomorphism

MHF Hall of Honor
Dec 2007
1,465
674
IISc, Bangalore
Can you answer these questions:

1) How many two digit positive integers are divisible by 3 or 5?
Say the answer is A.

2) How many two digit positive integers are there?
Say the answer is B.

Then the probability is \(\displaystyle \frac{A}{B}\).
 
Feb 2008
297
7
Can you answer these questions:

1) How many two digit positive integers are divisible by 3 or 5?
Say the answer is A.

2) How many two digit positive integers are there?
Say the answer is B.

Then the probability is \(\displaystyle \frac{A}{B}\).
Thanks for that