Counting Problems( Week 8 Practice) 1. How many internal angles in the following polygon? 2. A group of 22 students lined up. There are 7 students on the left of Eric. How many students are there on his right? 3. A few pieces of wood wii be connected to form a long piece. Each connection needs 4 nails. How many pieces will be connected if 36 nails are used? 4. A light, pulled the first time, turns on; pulled the second time, still on; pulled the third time, turns off; and then backs to on pulled the fourth times. Steve pulled 8 times, is the light on or off? 5. The buildings along one side of a certain street are numbered odd numbers consecutively from 463 to 593. How many buildings are there in total along the side of the street? |