1. A program is designed to help children learn their math facts. If they answer incorrectly, the message, “That’s not correct—please try again!” will appear. What kind of loop should this statement be in?
a binary loop
a for loop
a while loop
a random loop

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way