Question
217Â Â Â Â 210Â Â Â Â Â 236Â Â Â Â Â 299Â Â Â Â Â
423Â Â Â Â 640 In each of the following questions a number is wrong in the series. Find out the wrong number.Solution
217 + (23Â - 1) = 210 210 + (33Â - 1) = 236 236 + (43Â - 1) = 299 299 + (53Â - 1) = 423 423 + (63Â - 1) =Â 638
Average 20 numbers is ‘x’. If the average of first 12 numbers is 72.5 while average of last 5 numbers is 82.2 and 13th, 14th a...
The average of two numbers ‘P’ and ‘Q’ is 480 such that they are in the ratio 5:7 respectively. Another number ‘R’ is 60 more than ‘Q’ a...
A set contains twelve numbers. The average of the first eight numbers is (y - 3), and the average of the last three numbers is (y + 5). The average of t...
The average of five even numbers is 60. If we replace two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4....
The average salary of 24 employees is recorded as ₹ 16,584. If the salary of an employee with value ₹14,526 was entered Wrongly as ₹ 41,238, then ...
The average of 8 consecutive odd numbers is 20. If the odd numbers immediately before and after this sequence of 8 odd numbers ar...
The average of five even numbers is 64. If we replace two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4....
There are 4 teammates: P, Q, R, and S. The average of their weights is 82 kg. The average weight of P, R, and S is 80 kg. If the average weight of Q and...
There is a pile of six boxes. The weight of the topmost box i.e., 6th box is one fifth of the second box, the weight of the first box is 25% ...
If average of first 12 numbers is (n – 23) and the sum of remaining number is 925. Find the value of ‘n’, if the average of 22 numbers is ‘n’....
