Question:
The sum of successive odd numbers 1, 3, 5, 7, 9, 11, 13 and 15 is
(a) 61
(b) 64
(c) 49
(d) 36
Solution:
(b) We know that, the sum of first n odd natural numbers is n2.
Given odd numbers are 1,3, 5, 7, 9,11,13 and 15.
So, number of odd numbers, n = 8
The sum of given odd numbers =n2 = (8)2 = 64
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