Question

(c) Look at the following and find the sum of two consecutive triangular numbers:
1
3
6
10
15
9
4
16
25
t Square numbers
Thus the sum of any two consecutive triangular numbers is a square number.​

Answer 1

Answer:

89

Step-by-step explanation:

1+3+6+10+15+9+4+16+25=89

Answer 2

Answer:

89

Step-by-step explanation:

1+3+6+10+15+9+4+16+25=89