Q-1: How many two digit numbers of distinct digits can be formed by using digits 1, 2, 3, 4, 5, 6 and 7 such that the numbers are divisible by 5?
Choose one:
A) 3	B) 4	C) 5	D) 6	E) 7
6   Two digit numbers divisible by 5 must end in either 0 or 5. Since there is no 0, all correct answers are a combination of the other digits and 5. There are six other numbers plus the 5 so there are 6 correct answers.   Correct answer is 6.
<result>D</result>
Q-1: How many two digit numbers of distinct digits can be formed by using digits 1, 2, 3, 4, 5, 6 and 7 such that the numbers are divisible by 5?