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The unit's place of a cube of a number is 7.The unit's place of the square of the same number is |
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Answer» GIVEN : The unit's place of a cube of a NUMBER is 7. To find : The unit's place of the square of the same number. solution : we see, 1³ = 1, 2³ = 8, 3³ = 27, 4³ = 64, 5³ = 125 , 6³ = 216, 7³ = 343 , 8³ = 512 and 9³ = 729 here it is clear that if unit's place of a number of is 3. then the unit's place of the cube of that number must be 7 [as 3³ = 27] now after SQUARING of the number, unit's place of the square of that number = (3)² = 9. Therefore the unit's place of the square of the same number is 9. also READ SIMILAR questions : The digit in the ten’s place of a two-digit number is three more than the digit in the unit’s place. If the digit at uni... The digit in the unit’s place of 7171 + (177)! is |
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