What is the probability if a spinner with 5 even colors landing on the same color 4 times or fewer times in 10 spins?

Somone me i want to know what 18 hours out of 24 hours in a fraction

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

How do you write 600 as a product of its prime factors (index! )