Question

Some students in Mrs.

Tkach's class were
counting by 6's. What
did the 13th student say?

Answer 1

Answer: 78

Explanation:

use formula

first term+(n−1)×common difference

6 is the first term, n= 13 and common difference is 6

6+(13-1) * 6

6+12*6

(use bodmas)

6+72

=78

so the number said by the 13th student is 78