What are the first three digits of the square of 125?

186

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156

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126

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216

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Solution

The correct option is B 156
Since the number ends in 5, we can use the shortcut to get the square of 125.
The numbers in 125 before 5 is 12.
Multiply the number 1 greater than 12 by 12.
So, 12 x 13 = 156.
Thus 156 will be the first 3 digits in the square of 125.

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