pyq/2013/csat/28

There are five hobby clubs in the college: Photography, Yachting, Chess, Electronics, and Gardening.

1. The Gardening group meets every second day.

2. The Electronics group meets every third day.

3. The Chess group meets every fourth day.

4. The Yachting group meets every fifth day.

5. The Photography group meets every sixth day.

How many times do all five groups meet on the same day within 180 days?

(A) 3

(B) 5

(C) 10

(D) 18