IN JIM'S PE CLASS, 6 STUDENTS WERE USED TO MAKE A HUMAN PYRAMID. 3 PEOPLE WERE ON THE BOTTOM, 2 ON THE NEXT LAYER AND 1 ON TOP. JIM WANTS TO MAKE A GIANT PYRAMID WITH 7 LAYERS. HOW MANY STUDENTS WILL HE NEED AND HOW MANY WILL BE ON THE BOTTOM LAYER.

1 answer

Would this be the layers?

7, 6, 5, 4, 3,2,1 or counting down,

1,2,3,4,5,6,7

What if you had n layers?

Notice the number of people is

layers Number
1 - 1
2 - 3
3 - 6
4 - 10
5 - 15
6 - 21
7 - 28
Can you see a pattern?