Question
The average of 7 numbers is 28. The average of first
three of them is 23 and the last three of them is 42. Then the fourth number is:Solution
We know that, Average = Sum of all quantities/number of quantities Average of 7 numbers = 28 ∴ Sum of all numbers = 28 × 7 = 196 Average of first 3 numbers is 23. Sum of first 3 numbers = 3 × 23 = 69 Average of last 3 numbers os 42. Sum of last 3 numbers = 3 × 42 = 126 4th number = 196 – 69 – 126 = 1
Find the number which does NOT belong to the group : 101, 242, 363, 484
Select the set in which the numbers are related in the same way as are the numbers of the following set.
(4, 152, 6)
The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/a...
What will be the resultant if the first digit of the lowest number is multiplied by the third digit of the highest number?
196 49 21
18 x 9
If ‘ x' is resultant of the first row, what is the resultant of the second row?
...Select the number that can replace the question mark (?) in the following series. 17, 21, 30, 46, 71, ?
Select the correct combination of mathematical signs that can sequentially replace '*' sign and balance the equation given below.
196 * 7 * 45 * ...
Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is relate...
A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series:-
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