Which is the least number that must be subtracted from 1856 so that the remainder when divided by 7, 12, 16, is 4?
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LCM of (7,12,16) = 336
The numbers which will leave remainder 4 will be {336+4, 336*2 +4, 336*3 +4,........so on..}
The largest such number less than or equal to 1856 is 336*5+4 or 1684
To obtain this you need to subtract 172 from 1856.
Ans is 172
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