ds:stats

Each employee on a ceartin task force is either a manager or a director.What percent of the employees on the task force are directors? 1)The average salary of the managers of the task force is $5000 less than the average salary of all the employee on the task force. 2)The average salary of the direc...

ps:functions

For which of the following function f(a+b)=f(a)+f(b) for all positive numbers a and b?

f(x)=x^2
f(x)=x+1
f(x)=rootx
f(x)=2/x
f(x)=-3x

ps:pnc

How many 5 digit palindromes can be made using 1,2,3?

ya its 30 tiles..but how did you solve it?

ps:stats

A List of positive integers is arranged in ascending order such that the 19th number in the series represents the median of the series. If the sum of all the numbers in the series is 222, what is the average of the given list?

ds:numbers

On Christmas, a class teacher gave a gift pack to each student present in a class. Each pack had x chocolates,y biscuits and z toffes. How many students were there in the class? (1) Each student received chocolates, biscuits and toffees in the ratio 1:2:4. (2) The class teacher distributed a total o...

thank you

ps:pnc

In a certain company the board of directors has been given the responsibility to nominate 3 key positions (one director and two identical positions in the senior management).The board will select 1 of 10 candidates eligible to fill the position of director and 2 of 8 candidates eligible to fill 2 id...