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Which of the following are divisible by both 2 and 3?

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Which of the following are divisible by both 2 and 3?  [#permalink]

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New post 13 Apr 2016, 13:17
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A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

73% (01:06) correct 27% (01:04) wrong based on 229 sessions

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Re: Which of the following are divisible by both 2 and 3?  [#permalink]

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New post 13 Apr 2016, 23:50
1
Bunuel wrote:
Which of the following are divisible by both 2 and 3?

I. 234,124,422
II. 88,865,544,264
III. 5,555,554,673

A. I​ only
B. I and II​
C. II and III
D. II Only
E. I​ and III


Divisibility rule of 2: The number should be even or the last digit should be divisible by 2
Divisibility rule of 3: The sum of all the digits of the number should be divisible by 3


I. 234,124,422
Last digit -2. This is divisible by 2
Sum of digits = 24. This is divisible by 3
Hence the number is divisible by both 2 and 3

II. 88,865,544,264
Last digit -2. This is divisible by 2
Sum of digits = 60. This is divisible by 3
Hence the number is divisible by both 2 and 3

III. 5,555,554,673
Last digit - 3. This is not divisible by 2.

Hence only I and II are divisible by both 2 and 3
Correct Option: B
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Re: Which of the following are divisible by both 2 and 3?  [#permalink]

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New post 14 Apr 2016, 12:42
Bunuel wrote:
Which of the following are divisible by both 2 and 3?

I. 234,124,422
II. 88,865,544,264
III. 5,555,554,673

A. I​ only
B. I and II​
C. II and III
D. II Only
E. I​ and III


III. is not divisible by 2 since the last digit is odd so we eliminate option C and E, we are left with option A, B and D

Among option I and II lets check the divisibility of 3

I. is divisible by 3 since sum of the digits is 24 , which is divisible by 3
II. is divisible by 3 since sum of the digits is 60 , which is divisible by 3

Thus among the given options only (B) holds true. :-D :lol:

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Re: Which of the following are divisible by both 2 and 3?  [#permalink]

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Re: Which of the following are divisible by both 2 and 3?   [#permalink] 27 Sep 2018, 01:42
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Which of the following are divisible by both 2 and 3?

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