Answers

2014-09-01T16:52:49+08:00
So basically 19 is a prime number. Then its factors are only 1 and 19. If we are going to add this the answer is 20.
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2014-09-01T16:56:55+08:00
The answer should be 20. Why? Because 19 is a PRIME NUMBER. So 19 x 1= 19 then 19 + 1= 20
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