How many integers between 100 and 150, inclusive, cannot be
evenly divided by 3 nor 5?
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Answer Posted / tamilselvi
ans=4
no divisible by 3:17
A =
{102,105,108,111,114,117,120,123,126,129,132,135,138,141,144
,147,150}
no divisible by 5: 11
B= {100,105,110,115,120,125,130,135,140,145,150}
3 nor 5 means ^(AvB)
So, AvB = 25
^(AvB) = 4
now strike out 105 120 135 150,as it is present in
both.remaining totally 24 nos are present,which cannot be
evenly divided 3 or 5.(means wen divisible by 3 it is not
by 5 n vice versa)
| Is This Answer Correct ? | 3 Yes | 6 No |
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