Rita, George, Rachel and Bob each have a different colored bike. The bikes are red, blue, green and black. No one has a bike in a color that begins with the first letter of their name. Bob's bike is not red and Rita's is not blue. What color is Rachel's bike?GreenBlackRedBlue

You are purchasing a new bike.  There are 3 types of bikes (road, cross, and mountain). Road bikes come in red and white; cross bikes come in yellow, pink, and blue; and mountain bikes come in black and green.  How many different choices for bike/color do you have?21 choices10 choices12 choices7 choices

Wendy, Imali, Isaac and Jesse live in different houses. Each house is a different color, and is one of the following colors: white, blue, green, yellow. Jesse's house is white. Wendy's house is not blue. Imali's house is not green. Isaac's house is not yellow or blue. What color is Wendy's house?GreenWhiteYellowBlue

Four farmers each had 10 cattle. Altogether there were 16 brown cows, 4 white cows and 20 black cows. Jason only had brown, Joe only had black, and Clare had 4 white. If Belinda had 6 brown and 4 black, what is the other colour of cow Clare had?

In Leah's classroom there are red chairs, yellow chairs, and blue chairs. There are 8 red chairs. There are 4 times as many yellow chairs as red chairs, and there are 6 fewer blue chairs than yellow chairs. How many chairs are there in Leah's classroom?

In a particular town, 25% of all bikes are road bikes, 40% are cross bikes, and 35% are mountain bikes.  Of all road bikes, 70% are blue and the rest are green.  Of all cross bikes, 10% are green, 35% are red, and the remainder are blue.  A fifth of all mountain bikes are green.If you pick a single bike at random, what’s the probability that it would be green?   (keep your answer to 3 significant digits, e.g., 0.XXX).