Question : The difference between the greatest and the least five-digit numbers formed by 2, 5, 0, 6, and 8 is (repetition of digits is not allowed):
Option 1: 69552
Option 2: 65925
Option 3: 65952
Option 4: 63952
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Correct Answer: 65952
Solution : The greatest 5-digit number formed by 0,2,5,6,8 is 86520 The smallest 5-digit number formed by 0,2,5,6,8 is 20568 (we cannot start with 0 because this makes it a 4-digit number). Required Difference = Greatest 5-digit number – Smallest 5-digit number Required Difference = 86520 – 20568 = 65952 Hence, the correct answer is 65952.
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Question : The difference between two numbers is 9 and the difference between their squares is 207. The numbers are:
Option 1: 17 and 8
Option 2: 16 and 7
Option 3: 15 and 6
Option 4: 15 and 7
Question : The sum of the cubes of two numbers is 793. The sum of the numbers is 13. Then the difference between the two numbers is:
Option 1: 7
Option 2: 6
Option 3: 5
Option 4: 8
Question : The average of the largest and smallest 3-digit numbers formed by 0, 2 and 4 would be:
Option 1: 312
Option 2: 213
Option 3: 222
Option 4: 303
Question : The average of two numbers is 8, and the average of the other three numbers is 3. The average of the five numbers is:
Option 1: 2
Option 2: 3
Option 4: 6
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