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sum of the digits

by alivapriyada » Tue Sep 14, 2010 12:53 pm
If the sum of the digits of the positive two-digit number x is 4, what is the value of x?

(1) x is odd.

(2) Twice the value of x is less than 44.
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by goyalsau » Tue Sep 14, 2010 2:43 pm
alivapriyada wrote:If the sum of the digits of the positive two-digit number x is 4, what is the value of x?

(1) x is odd.

(2) Twice the value of x is less than 44.
For me its B,
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by beatthegmatinsept » Tue Sep 14, 2010 3:02 pm
alivapriyada wrote:If the sum of the digits of the positive two-digit number x is 4, what is the value of x?

(1) x is odd.

(2) Twice the value of x is less than 44.
Possible numbers that meet the requirements above:
13
31
22
40

(a) x is odd. From the numbers listed above, x could be either 13 or 31. Insufficient.

(b) 2x < 44 --> x < 22. From the numbers listed above, only one value meets the criteria -13 (i.e. x < 22). Sufficient.

Ans B.
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by beatthegmatinsept » Tue Sep 14, 2010 3:03 pm
@alivapriyada - Whats the source of this question? If its from a practice test, can you tell me the difficulty level of this problem?
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by alivapriyada » Wed Sep 15, 2010 12:18 am
beatthegmatinsept wrote:@alivapriyada - Whats the source of this question? If its from a practice test, can you tell me the difficulty level of this problem?
OA is B
Source is MGMAT
Difficulty level is 600-700
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by sanju09 » Wed Sep 15, 2010 10:23 pm
alivapriyada wrote:If the sum of the digits of the positive two-digit number x is 4, what is the value of x?

(1) x is odd.

(2) Twice the value of x is less than 44.

Possibilities open for x are 13, 22, 31, and 40.

(1) It reads x as 13 or 31. Insufficient

(2) It reads x as 13 only. [spoiler]Sufficient


B[/spoiler]
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by alivapriyada » Thu Sep 16, 2010 4:33 am
sanju09 wrote:
alivapriyada wrote:If the sum of the digits of the positive two-digit number x is 4, what is the value of x?

(1) x is odd.

(2) Twice the value of x is less than 44.

Possibilities open for x are 13, 22, 31, and 40.

(1) It reads x as 13 or 31. Insufficient

(2) It reads x as 13 only. [spoiler]Sufficient


B[/spoiler]


Many thnks!!!!
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