Abag contains 50 marbles 10 of which are blue 8 are red 20 are green and 12 are purple marcie takes a marble out of the bag records the color and returns it to the bag how many red marbles should she expect after 500 trials

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

If 25% of y is 30, what is 60% of y?