Question

Find the square numbers that we will get if we add the following terms of triangular numbers series...
a)4th and 5th terms
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Answer 1

Answer:

36

Step-by-step explanation:

4th term=15

5th term=21

their sum =36

Answer 2

Answer:25

Step-by-step explanation:

4th Term:-1+2+3+4=10

5th Term:-1+2+3+4+5=15

4th Term +5th Term =25