Question : The average of all the numbers between 14 and 61 which are divisible by 5 is:
Option 1: 37.5
Option 2: 38
Option 3: 40
Option 4: 44
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Correct Answer: 37.5
Solution : The average of all the numbers between 14 and 61 which are divisible by 5 = $\frac{15+20+25+30+35+40+45+50+55+60}{10}$ = $\frac{75×5}{10}$ = $37.5$ Hence, the correct answer is 37.5.
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Question : The average of 5 numbers is 48. The average of the two numbers is 40 while the average of the other two is 58. Find the value of the remaining number.
Option 1: 44
Option 2: 34
Option 4: 30
Question : What will be the average of all the even numbers between 5 and 29?
Option 1: 14
Option 2: 19
Option 3: 22
Option 4: 17
Question : The average of 20 numbers is 36. If each number is increased by 4, then what will be the new average?
Option 2: 46
Option 4: 36
Question : The average of 20 numbers is 30 and that of the other 30 numbers is 50. What is the average of all the numbers?
Option 1: 42
Option 2: 47
Option 3: 44
Option 4: 45
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