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What is the two-digit number? I. The difference between the two digits of the number is 0. II. The sum of the two-digits of the number is 18.

If the data given in Statement I alone are sufficient to answer the question whereas the data given in Statement II alone are not sufficient to answer the question
if the data given in Statement II alone are sufficient to answer the question whereas the data given in Statement I alone are not sufficient to answer the question
if the data in either Statement I alone or in statement II alone are sufficient to answer the question
if the data in both the Statement I and II are not sufficient to answer the question

Correct Answer:

Explanation:

from Statements I and II,
9 - 9 = 0 and 9 + 9 = 18
So, number = 99

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