In the telephone number 936-215X, what digit does X

Question

In the telephone number 936-215X, what digit does X represent?

(1) Only one digit in the telephone number is greater than X. 
(2) X is the greatest of the digits not among the telephone number’s first six digits.

GMATBLACKBELT · Answer

I dunno if it can be A.


B/c while 9 is clearly the largest diget and greater than x. X could be 7 or 8. 

1,2,3,5,6<7 and 8<9.



Im still confused w/ the wording of B. So ima hold off on any answer choices. Whered u get this question?

x2suresh · Answer

It should be B.

(2) X is the greatest of the digits not among the telephone number’s first six digits.

Find the digits that are not among the telephone number's first six digits.
 8,7,4,0 ..

greatest of {8,7,4,0} is 8.
Sufficient

In the telephone number 936-215X, what digit does X represent?

(1) Only one digit in the telephone number is greater than X.
(2) X is the greatest of the digits not among the telephone number’s first six digits.

scthakur · Answer

I messed up while interpreting stmt1. I went for D. The way I interpreted Stmt1 is the second highest digit and completely forgot that 7 can also be that digit as 8 is not appearing in the telephone number.

LoyalWater · Answer

The second sentence is awkward. The guy who wrote this needs to desperately go through the Manhattan SC guide before framing DS questions in the future.

spriya · Answer

(1) digit can be 7 or 8 INSUFFI only 9 is greater
(2)X is greates of 4,7,8,0 => 8 SUFFI

IMO B

pradeepss · Answer

1. 7 OR 8 NS
2. (0, 4, 7, 8) are the numbers left not among the telephone numbers first six. And the greatest is what X is! so its 8. Sufficient.

ANSWER: B

More of a verbal question then Quant!

Farid · Answer

By 1: it can be 7 or 8 but I can't understand 2nd

Bunuel · Answer

In the telephone number 936-215X, what digit does X represent?

(1) Only one digit in the telephone number is greater than X --> x could be 7 or 8. Not sufficient.

(2) X is the greatest of the digits not among the telephone number’s first six digits. The digits that are NOT in the telephone number are: 0, 4, 7 and 8. Greatest among them is 8. Hence x is 8. Sufficient.

Answer: B.

Hope it's clear.

AbdurRakib · Answer

I was wrong on my first try

Can you refer me some similar question to practice more ?

bumpbot · Answer

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In the telephone number 936-215X, what digit does X

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GMAT Data Sufficiency (DS) Questions

In the telephone number 936-215X, what digit does X

Prep Toolkit

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