Question
A set contains ten numbers. The average of the first six
numbers is (x - 5), and the average of the last three numbers is (x + 3). The average of the entire set is 'x'. If the 7th number of the set is 38, then find the value of 'x'.Solution
Sum of the numbers of set = 10x Sum of first 6 numbers = 6(x − 5) = 6x − 30 Sum of last 3 numbers = 3(x + 3) = 3x + 9 ATQ, 6x − 30 + 38 + 3x + 9 = 10x 9x + 17 = 10x x = 17
Who is the husband of V?
The Person who likes Mango in the row arrangement sits which of the following place in the circular arrangement? Â
Who sits opposite to A7?
Which of the following statement is correct about K5?
If L sits second to the left of O then how many seats are between L and R when counted from the right of R?
Which of the following is R’s position?
Which of the following colour does V like?
Who sits second right of I?
Houses of six persons U, V, W, X, Y and Z are situated in two rows of three houses each sitting opposite to each other. X's house is diagonally opposite...
Harman, Sunil, Varun, Naman and Bhavesh are arranged in descending order of the height from the top. Harman is at third place. Bhavesh is between Naman ...
Relevant for Exams:
