exam
Maths Puzzle
Numerical Ability
Hi! Can you help me with the problem:
Write an expression for the difference of 4 and the square of a number.
I do not know whether it is 4 - n^2 or n^2 - 4
Thanks. :)
Read Solution (Total 0)
exam Other Question
Can someone help me on this problem?
I need to divide:
10s^3 t^5 * 3s^3 t^5/3s^3 t^3
Thanks,
Lyn
Sarah has a collection of nickels, dimes, and quarters worth $15.75. She has 10 more dimes than nickels and twice as many quarters as dimes. How many coins of each kind does she have?