Question

Dianna has 6 quarters, 5 dimes, and 4 nickels in her purse. She reaches into her purse and randomly grabs two coins. What is the probability that Dianna grabs two dimes?

A. 1/9
B. 4/45
C. 5/52
D. 2/21

Answer 1

the correct answer is B: 4/45


reasoning:

how to get the answer is simple. first you have to find a common factor. the only common factor in this chart of 15 is 45. even from then you have an obvious answer and can eliminate all other possible answers. :)