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
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Correct Answer: 312
Solution : Given: Digits to form a 3-digit number are 0, 2, and 4. According to the question, The largest number using the given digits will be 420. The smallest number using the given digits will be 204. Average $ = \frac{(420 + 204)}{2} = 312$ Hence, the correct answer is 312.
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Question : The average of three consecutive odd numbers is 52 more than $\frac{1}{3}$rd of the largest number. What is the smallest of these numbers?
Option 1: 79
Option 2: 75
Option 3: 81
Option 4: 77
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
Question : If the average of 6 consecutive even numbers is 25, the difference between the largest and the smallest number is:
Option 1: 8
Option 2: 10
Option 3: 12
Option 4: 14
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 3: 5
Option 4: 6
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