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1). 642). 63). 84). 4 |
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Answer» Let the two digit number be 10x + y where x and y are 10th place digit and unit place digit respectively. Given, Unit place digit and tenth place digit of a two digit number are in the RATIO 2 : 3 ⇒ y : x = 2 : 3 ⇒ y = 2X/3 Given, sum of tenth place digit and unit place digit is 10 ⇒ x + y = 10 ⇒ x + 2x/3 = 10 ⇒ 3x + 2x = 30 ⇒ 5x = 30 ⇒ x = 6 ⇒ y = 2x/3 = 12/3 = 4 Two digit number = 10x + y = 10(6) + 4 = 64 3/4th of SQUARE root of two digit number = (3/4) × (64)1/2 = (¾) × 8 = 6 ∴ 3/4th of square root of two digit number is 6. |
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