Question

4.
5.
Write the formulae to find the sum of
i)
the first 'n' odd numbers
ii)
the first 'n' even numbers
iii)
the first ‘n’ natural numbers​

Answer 1

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Answer 2

1. The total of any set of sequential odd numbers beginning with 1 is always equal to the square of the number of digits, added together. If 1,3,5,7,9,11,…, (2n-1) are the odd numbers, then; Sum of first odd number = 1. Sum of first two odd numbers = 1 + 3 = 4 (4 = 2 x 2).

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