Ankitaverma wrote: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.
The first six digits of the phone number are, in ascending order, 1, 2, 3, 5, 6, 9.
Statement 1:
It's possible that X=7, since the list above includes only one digit greater than 7:
9.
It's possible that X=8, since the list above includes only one digit greater than 8:
9.
INSUFFICIENT.
Statement 2:
The following digits are not included in the list above.
0, 4, 7, 8.
Since X must be the greatest of these 4 digits, X=8.
SUFFICIENT.
The correct answer is
B.
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