Online Trivia sites - math trivia for fun or for real money cash

Online Math Trivia is no an easy thing to solve. Math genious are the real pro and experts at that trivia category.

Here is an example:

 

A card is drawn at random from an ordinary pack of playing cards. What is the probability that it is neither a face card nor a black card?

1. 20/52 = 5/13

2. 14/52 = 7/26

3. 10/52 = 5/26

4. 16/52 = 4/13

 

And here is another one which is more easier:

If 5/8 of the children in a school are boys and the school consists of 2400 students, how many girls are there?

1. 1440

2. 900

3. 1412

4. 1550
.