Question
What is the average of the first eight triangular
numbers?Solution
ATQ,
Triangular numbers are the numbers obtained by continued summation of natural numbers.
First eight triangular numbers = 1, 3, 6, 10, 15, 21, 28, 36
Required average = (1 + 3 + 6 + 10 + 15 + 21 + 28 + 36) Ă· 8
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