1.

1). 322). 563). 484). None of these

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]

12 × 4 = 48

∴ The product is 48



Discussion

No Comment Found