Question
The least number which should be added to 28523 so that the sum is exactly divisible by 3, 5, 7 and 8 is
A. 41
B. 47
C. 32
D. 37
Answer: D. 37
Solution:
LCM of 3, 5, 7 and 8 = 840
28523 ÷ 840 = 33 remainder = 803
Hence the least number which should be added = 840 – 803
= 37
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