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Number System Practice Test 6
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© examsnet.com
Question : 2
Total: 12
Find the least number by which 90 is to be multiplied so that it becomes the multiple of 135.
7
3
25
52
None of these
Validate
Solution:
90
=
3
2
×
5
1
×
2
1
90 is not a prime, is a composite number;
135
=
3
3
×
5
1
135 is not a prime, is a composite number;
So, lcm( 90; 135) = 270 =
2
×
3
3
×
5
© examsnet.com
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