1. write the following statements with the factorial symbol. 1) 2 * 4 * 9 * * 20 2) 1 * 3 * 5 * * 19 2. prove: 5! + 5 * 5! + 6 * 6! + 7 * 7! + + 99 * 99! = 100!

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500