Question
The least number 'Y' which when divided by 15, 20, and 45
leaves 2 as the remainder in each case. Find the value of ('3Y' - 5).Solution
ATQ,
As we know the least number which is divisible by 'a', 'b', and 'c' is the LCM of 'a', 'b', and 'c'.
So, the number which is completely divisible by 15, 20, and 45 = LCM of
15, 20, and 45 = 180
So, 'Y' = 180 + 2 = 182
Now,
(3Y - 5) = (182 × 3) - 5 = 546 - 5 = 541
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