Question
The ratio of the salary of K and L is 4:5. The salary of
M is 50% of the sum of salary of K, L, and M. If the salary of M and sum of the salary of K, L, and M remain same. What percentage of the salary must be reduced for L, if Salary of K is increased by 25%.Solution
Let the salary of K and L be 4x and 5x respectively Salary of M = 0.5 x (4x+5x+M) M – 0.5M = 0.5 x 9x M = 9x Increased in salary of K = Rs. X The new salary of K is 5x. Since the sum of salary for three remains same and salary of C remain same 18x = 9x+5x+Y Y = 4x New salary of L is 4x Old salary of L is 5x Percentage of salary reduced = x/5x x 100 = 20%.
At a round table, n persons are seated on n chairs. The probability that two friends from same college are sitting next to each other, is:
The deseasonalised time - series data will have only trend (T), cyclical (C) and irregular (I) components and is expressed as:
The grouped data for the observation are as follows.
Class :Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2-4Â Â Â Â Â Â Â Â 4-6Â Â Â Â Â Â Â Â Â 6-8<...
These seventh decile (D7) of data set 4, 3, 10, 9, 1 is
The coefficient of correlation is the _________ of coefficients of regression.
Five persons A, B, C, D and E occupy seats in a row at random. The probability that A and B sit next to each other is:
Which option is WRONG?
Which option is incorrect for the component of ti.me series.
