There are 32 pieces of building blocks in a bag: 8 each of blue, green, red, and yellow. four pieces are chosen at random. what is the probability that all four pieces selected are red?

On saturday a souvenir shop had 125 customers. sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

Is a square always, sometimes, or never a parallelogram