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1). 322). 563). 484). None of these |
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Answer» The NUMBER obtained is greater than the number obtained on reversing the digits, thus the TEN’s digit is greater than the unit’s digit Let ten’s digit and unit’s digit be 2x and x respectively Then, [10(2x) + x] + (10x + 2x) = 132 ⇒ 21x + 12x = 132 ⇒ 33X = 132 ⇒ x = 4 The product between the sum and difference of the digits of the number = (2x + x)(2x – x) ⇒ [2(4) + 4][2(4) – 4] ∴ The product is 48 |
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