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CTET Class I to V 2015 Sep Paper
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© examsnet.com
Question : 51
Total: 150
The sum of all the positive factors of 84 which are multiples of 7, is:
113
189
196
112
Validate
Solution:
(c) Positive factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.
Out of them those are multiple of 7 and their sum = 7 + 14 + 21 + 28 + 42 + 84 = 196
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