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Mathematics

The number of digits in the square root of 1210000 is :

  1. 2

  2. 4

  3. 3

  4. 5

Sq & Sq Roots

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Answer

1210000=11×11×104=11×102=1100\sqrt{1210000}\\[1em] = \sqrt{11 \times 11 \times 10^4}\\[1em] = 11 \times 10^2 \\[1em] = 1100 Number of digits in 1210000\sqrt{1210000} = 4.

Hence, option 2 is the correct option.

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