A number when divided by 143 leaves 31 as remainder. What will be the remainder when the same number is divided by 13? (a) 0 (b) 1 (c) 3 (d) 5
Correct Answer: (d) 5
Explanation:
Dividend = Divisor × Quotient + Remainder.
Given,
Divisor = 143
Remainder = 13
The number is in the form of 143x + 31, where x is the quotient.
∴ 143x + 31 = 13 (11x) + (13 × 2) + 5 = 13 (11x + 2) + 5
The remainder will be 5 when the same number is divided by 13.
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