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Question

The least number which when increased by 4 is divisible by each of the numbers 10,15,20 and 25 is

A
296
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B
300
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C
304
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D
308
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Solution

The correct option is A 296
Prime factorization of numbers
10=2×5
15=3×5
20=2×2×5
25=5×5
Smallest number divisble by above 4 numbers will be LCM = 22×3×52 = 300
Now , the number we need is 4 less than 300, therefore the number is 3004 = 296

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