CAT 1998 — QA Question 8
Number TheoryEasy
Passage / Data
âââââââDirection: Answer the questions based on the following information.
Production pattern for number of units (in cubic feet) per day.
For a truck that can carry 2,000 cubic ft, hiring cost per day is Rs. 1,000. Storing cost per cubic feet is Rs. 5 per day.
Five-digit numbers are formed using only 0, 1, 2, 3, 4 exactly once. What is the difference between the maximum and minimum number that can be formed?
Answer & solution
- A
19800
- B
41976
32976
- D
None of these
Solution
The maximum and the minimum five-digit numbers that can be formed using only 0, 1, 2, 3, 4 exactly once are 43210 and 10234 respectively. The difference between them is 43210 – 10234 = 32976.