Railway Recruitment Board Mathematics — Question 1688
Question
A number when divided by 342 leaves a remainder of 47. When the same number is divided by 19, what is the remainder?
- 3
- 9
- 5
- 7
Correct answer
B — 9
Explanation (English)
342 = 19 × 18, so the number = 342k + 47 = 19(18k) + 47. Remainder on dividing by 19 = 47 mod 19 = 47 − 38 = 9.
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