Question

PLEASE ANSWER & EXPLAIN [ 100 POINTS]

Answer 1

Explanation:

1st row: 10 marbles

each following row has one less

2nd row: 9

3rd row: 8

4th row: 7

5th row: 6

6th row: 5

so there are 5 marbles

Answer 2

Explanation:

Given the first line has 10 marbles and each following line has one less, the general equation is the nth line will have 10-(n-1) marbles.

So the sixth line has 10-(6-1) = 5 marbles.