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Q.

How many hundreds are there in the sum of the factors of140?

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a

336

b

300

c

3

d

30

answer is D.

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Detailed Solution

Factors of 140 are 1,2,4,5, 7,10,14,20,28,35,70 and 140

 Their sum=336=3×100+36

∴ The sum of the factors of140 has 3 hundreds.

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