Question
The average of five number is 12 and the average of
three of those number is 14Find the average of the rest of the two numbers.Solution
ATQ, Step 1: Find the sum of all five numbers. The average of five numbers is 12, so the sum of all five numbers is 5 × 12 = 60. Step 2: Find the sum of three of those numbers. The average of three of those numbers is 14, so the sum of those three numbers is 3 × 14 = 42. Step 3: Find the sum of the remaining two numbers. To find the sum of the remaining two numbers, subtract the sum of three numbers from the sum of all five numbers: Sum of remaining two numbers = Sum of all five numbers - Sum of three numbers Sum of remaining two numbers = 60 - 42 = 18. Step 4: Find the average of the remaining two numbers. To find the average of the remaining two numbers, divide their sum by 2 (since there are two numbers): Average of remaining two numbers = Sum of remaining two numbers / 2 Average of remaining two numbers = 18 / 2 = 9. So, the average of the remaining two numbers is 9.
7, 7, 14, 40, ?, 227
14, 20, 29, 44, 65, ?
- What will come in place of the question mark (?) in the following series?
32, 45, ?, 137, 216, 317 8, 24, 48, 80, ?, 168
60, 100, 160, 240, ?, 460
2.5, 5, 15, 60, ?, 1800, 12600Â
36, 48, 24, 60, ?, 72
12, 36, 80, 164, 328, ?
25   25   37.5   ?   328.125   1804.6875
Find the missing number in the given number series.
4, 9, 20, 37, 60, ?