GMAT Exam

In how many different ways can the digits 2, 2, 7 and 9 be arranged, so that there is at least one 2 between 7 and 9 always?

Read Solution (Total 1)

6 possibilities are there.
2729, 2927, 7292, 7229, 9272, 9227

Case 1: When 1st digit is 2.
2729, 2927

Case 2: When 1st digit is 7.
7292, 7229

Case 3: When 1st digit is 9.
9272, 9227
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GMAT Other Question

A number x is chosen at random from the set of integers that satisfy |x| < 9.
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