A number is terrific if it is a multiple of 2 or 3. How many terrific numbers are there between -11 and 11?
6
7
11
15
17
Multiplies of 2 or 3 are 4,6,8,9,10 and opposite and answer is 10 but why we should consider 2,3,-2,-3 and 0 when the question only about multiplies?