why each answer didn't work, why both answers suffficient???

I think I am missing something in this question: Source GMAT prep.software When the positive integer n is divided by 25, the reminder is 13.What is the value of n? 1. n<100 2.When n is divided by 20 the reminder is 3. My way of solving this: n<100, there is only one number that can fit into this con...

formula for income taxes

Before being simplified, the instructions for computing income tax on country R were to add 2% of one's annual income to the average of 100 units of country R's currency and 1% of one's annual income. Which of the following represents the formula for computing the income tax, in country R's currency...

this is interesting, because I counted base as unknown and height is 4! How do we know how is the graph will look like????
Let me know your thoughts

Thank you
N

triangle and coordinates problem

This is easy problem, still answered by me incorrectly: In the XY plane line K has positive slope and X intercept 4. If the area of the triangle formed by line and two axes is 12 what is Y-intercept of the line K? I answered this with -3 which was incorrect: Aabc=A*4=12 therefore A is -3 ( positive ...

easy problem, but still...

The function f is defined for all positive integers by the rule:f(n) is the number of positive integers each of which is less than n and has no positive factor in common with n other than 1. If p is any prime number then f(P)=

The answer is p-1.

What is the best way to approach to this problem?

#1 permutation problem

Of the 12 temp.empoyee 4 will be hired as permanent. If 5 of the 12 temp.are woman, how many of the possible groups of 4 temp.employees consist of 3 woman and 1 man?

Answer please ?