Question

To close school, the principle calls six teachers, who in turn call six more. If each of those teachers call six more, how many calls will be made by the teachers in the last group?

Answer 1

216 calls

Explanation:

if the principal calls 6 teachers, who also call 6 on their own, that is
`6*6=36` calls made. if each of those 36 teachers call 6 more teachers, its saying
`36*6=216` calls in the last group.

if you need total calls, you would have to add each group together meaning,
`1+6+36+216=259` total calls