Question : The least number which should be added to 1351 so that the sum is exactly divisible by 2, 4, 6 and 8 is:
Option 1: 11
Option 2: 15
Option 3: 13
Option 4: 17
Correct Answer: 17
Solution : The given numbers are 2, 4, 6 and 8. The least number which is exactly divisible by a, b and c is the L.C.M of a, b and c. Now, LCM of 2, 4, 6 and 8 is 24 By dividing 24 from 1351 we get 7 as the remainder So, the required number which should be added = 24 – 7 = 17 Hence, the correct answer is 17.
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