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Question

Which of the following numbers is divisible by 3, 7, 9 and 11?

Options:
A .  639
B .  2079
C .  3791
D .  37911
E .  None of these
Answer: Option B
 -  (a) 639 is not divisible by 7
(b) 2079 is divisible by 3, 7, 9 and 11
(c) 3791 is not divisible by 3
(d) 37911 is not divisible by 9

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1 Comments

1) divisible by 3
2+0+7+9= 18 is Divisible by 3
2) divisible by 9
2+0+7+9= 18 is Divisible by 9
3) divisible by 11
2+7 = 0+9
= 9 = 9
4) divisible by 7
2079 ÷ 7 = 297
2709 is divisible by 3,7,9,11.
(B)

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