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Find the square of 71.1. 56612. 50413. 51614. 50915. None of these. |
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Answer» Correct Answer - Option 2 : 5041 Concept used: Calculation skills trick. Calculation: Step - 1 Write down the squares of each of the digits in two digit format i.e. 72 = 49 and 12 = 01 The number obtained after this step is 4901. Step – 2 Multiply the digits with each other and also with the power 2 i.e. 7 × 1 × 2 = 14 Step – 3 Add the number obtained in step - 1 with the number obtained in step – 2 keeping the unit place empty i.e. 4 9 0 1 _ 1 4 _ 5 0 4 1 This is our final answer. |
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