If playing factor captors on a grid numbered 1-30 and 1,3,5,7,19,21,23,25 was already picked which number would you pick next and why
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28 is the answer because by taking 1,3,5,7 as a factors captors of 19(1+9=10=1+0=1), 21(2+1=3), 23(2+3=5) and 25(2+5=7). thereby the next number might have been sum of two numbers that is 28(2+8=10=1+0=1)
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