How many different pairs of numbers (s, t) such that s = 3t can be obtained if s and t are selected from the set of number {10, 1, 2, 3, 4, 5, 6, 7, 8, 9}  Choose the correct choice from the following answers:
A) 1	B) 2	C) 3	D) 4	E) 5
Given s=3t   t can take 1,2,3   and so s = 3,6,9   3 such pairs can be formed.   answer 3
<result>C</result>
How many different pairs of numbers (s, t) such that s = 3t can be obtained if s and t are selected from the set of number {10, 1, 2, 3, 4, 5, 6, 7, 8, 9}