Question
A set contains ten numbers. The average of the first six
numbers is (x - 1), and the average of the last three numbers is (x + 6). The average of the entire set is 'x'. If the 7th number of the set is 25, then find the value of 'x'.ÂSolution
Sum of the numbers of set = 10x Sum of first 6 numbers = 6(x − 1) = 6x − 6 Sum of last 3 numbers = 3(x + 6) = 3x + 18 ATQ, 6x − 6 + 25 + 3x + 18 = 10x 9x + 37 = 10x x = 37
Four numbers have been given, out of which three are alike in a certain way and one is different. Select the one that is different.
Three of the following four options are alike in a certain way based on the Alphabetical series. Which one among the following doesn’t belong to the g...
Three of the following four are alike in a certain way and so form a group. Which is the one that does not belong to that group?
Select the option in which the numbers are related in the same way as are the numbers of the following sets.
(13, 11, 52)
(9, 27, 76) Â
Select the set in which the numbers are NOT related in the same way as are the numbers of the following sets. (NOTE: Operations should be performed on t...
Find the odd one out
Rearrange the jumbled-up letters and choose the odd one out.
From the given alternatives, select the number, which does not belong to the same group:
Find the odd one out.
Find the one which does not belong to that group?
