A box contains 10 transistors, 3 of which are defective. If 3 are selected at random, find the probability that a. All are defective. b. None are defective.

Is one hundred eighty seven plus seven even

What is halfway between 20 and 29

A total of 720 people attended the school-basketball game. adult tickets cost $2.50 each and student tickets cost $1.50 each. if $1220 worth of tickets were sold, how many students and how many adults attended?

M divided by n = p-6 for n

R on the set {1,2,3,4,5}, so that (x, y) is in R if 3 divides x+y. List the elements of R.

Four friends bought 10 lbs of nuts and shared them equally. How many pounds if nuts did each friend get

Ten friends went to a local restaurant and all had the buffet at $6.75 each. Seven friends added ice cream for dessert for $1.99 each. Since it is a large group, a tip of $15.00 for the waitress was added. The following is the restaurant bill.

Betsy wants to paint the walls of her bedroom. Her bedroom measures 8 ft. by 10 ft. and has 8 ft. ceilings. Not counting doors and windows, how many square feet of wall will Betsy need to paint? 288 80 128 160

One winter the cost of bananas cost $0.80 per lb. The next winter the cost was $1.05 per lb. What was the percentage increase?

Which number is in the hundredths place 4982.6173