The following question consists of two statements I and II are given below. You have to decide whether the data provided in the statements are sufficient to answer the question.
What is the value of the two-digit number ab?
I. The difference between its digits is 2.
II. The sum of the digits is 4.
(a) The data in statement I alone was sufficient to the answer the question while II alone not sufficient to the answer the question.
(b) The data in statement II alone are sufficient to answer the question while data in statement I alone are not sufficient to answer the question.
(c) The data in statement I alone or in statement II alone are sufficient to answer the question.
(d) The data in both statements I and II are not sufficient to answer the question.
The following question consists of two statements I and II are given below. You have to decide whether the data provided in the statements are sufficient to answer the question.
What is the value of the two-digit number ab?
I. The difference between its digits is 2.
II. The sum of the digits is 4.
(a) The data in statement I alone was sufficient to the answer the question while II alone not sufficient to the answer the question.
(b) The data in statement II alone are sufficient to answer the question while data in statement I alone are not sufficient to answer the question.
(c) The data in statement I alone or in statement II alone are sufficient to answer the question.
(d) The data in both statements I and II are not sufficient to answer the question.
I. gives
…
II. gives
Solving, and
we get
Solving and
, we get
so, the required number either 13 or 31.
Thus, even both I and II together do not give the answer.