A child want to buy 3 new toys. If there are 10 toys that satisfy the child's criteria,in how many different ways can the child select the 3 new toys if the order of selection doesn't matter. Answers.
A) 20
B) 120
C) 210
D) 15
E) 45

Rationale: "the number of ways of choosing 3 toys out of 10 are counted by = 10 c 3 ways = 120 answer : option b"
Answer: B