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Sum of Two Consecutive Triangular Numbers Is a Square Number

By diagonal m...

Question

By diagonal method, square of number 64 can be calculated by drawing a square and dividing it into

A

6 sub-squares

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B

8 sub-squares

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C

4 sub-squares

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D

2 sub-squares

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Solution

The correct option is C
4 sub-squares

Number of digits in 64 = 2

Thus, sub-squares = 2² = 4

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Sum of Two Consecutive Triangular Numbers Is a Square Number

Standard VIII Mathematics

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