From the given square figure, what is the sum of triangular number?

15 + 21

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11 + 25

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12 + 24

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10 + 26

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Solution

The correct option is B $15 + 21$
The given pattern can be represented as $6^{2} = 36 = 15 + 21$ .
Both $15$ and $21$ are triangular number.

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From the given square figure, what is the sum of triangular number?

The correct option is B 15+21The given pattern can be represented as 62=36=15+21.Both 15 and 21 are triangular number.

The correct option is B $15 + 21$
The given pattern can be represented as $6^{2} = 36 = 15 + 21$ .
Both $15$ and $21$ are triangular number.