Find the value of 1 + 3 + 5 + 7 + 9 + 11.

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Solution

The correct option is A 36
Find: 1 + 3 + 5 + 7 + 9 + 11

We know that sum of first n odd numbers is $n \times n$ .

Here, we have first six odd numbers, so n = 6

So, 1 + 3 + 5 + 7 + 9 + 11 = $6 \times 6$
1 + 3 + 5 + 7 + 9 + 11 = 36

Suggest Corrections

Similar questions

(5 + 7 + 9 + 11 + 13) .

S = \frac{5}{1 \times 3 \times 7} + \frac{7}{3 \times 5 \times 9} + \frac{9}{5 \times 7 \times 11} + . . .,

45 S

Without adding, find the sum:
(i) (1+3+5+7+9+11+13)
(ii) (1+3+5+7+9+11+13+15+17+19)
(iii) (1+3+5+7+9+11+13+15+17+19+21+23)

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