1 + 3 + 5 +...+ 51 = ?

576

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676

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276

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476

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Solution

The correct option is B 676
Remainder obtained after dividing 51 by 2 = 25.
Therefore number of terms, n = 25 + 1 = 26.
$1 + 3 + 5 + . . . + 51 = n^{2} = 26^{2} = 676$

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Question 51

Solve the following:

$\frac{2 x - 3}{4 x + 5} = \frac{1}{3}$

1 + 3 + 5 + . . . . . + 51

1

51

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