A test consists of 20 problems and students are told to answer any 15 of these questions. In how many different ways can they choose the 15 questions?

15,504

20,145

23,670

25,890

Find two numbers that have 2,3 and 5 as factors. What other factors do the two numbers have in common?

Which of the following is a possible length and width of a rectangle with an area of 75 square meters? Select all that apply. A. 3 meters by 25 meters B. 5 meters by 15 meters C. 7 meters by 13 meters D. 10 meters by 8 meters E.

4 pounds of cheese. Cuts 1/8 pounds of cheese in each sandwich. What is the total number of sandwiches made using all 4 pounds of cheese?

What's the LCM of 6 and 9

Suppose that f (5) = 1, f ' (5) = 4, g (5) = - 8, and g' (5) = 7. Find the following values.

As time, t, passes, the concentration of organisms in a seawater sample is modeled by the function: C (t) = 0.80 (1.

If you roll a 6-sided die 6 times, what is the best prediction possible for the number of times you will roll a five?

Nia family bought 2 lb chesse and 1/4 pound was left. How much was eaten

What are the "tools" we use to write proofs?

What does 4 feet equal