For a carnival game, containers are arranged in a triangular display. The top row has 1 container. The second row has 2 container. the third row has 3 containers. The pattern continues until the bottom row, which has 10 containers. A contestant knocks down 29 containers on the first throw. How many containers remain?

Question

Carley

Mathematics

16 July, 08:04

For a carnival game, containers are arranged in a triangular display. The top row has 1 container. The second row has 2 container. the third row has 3 containers. The pattern continues until the bottom row, which has 10 containers. A contestant knocks down 29 containers on the first throw. How many containers remain?

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Answers (2)

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Colin Mcpherson · Answer 1

For this, you will need to know the triangle numbers. To know how many are on row ten, find the cumulative frequency (running total) of every number up to ten

1 = 1

2 = 3

3 = 6

4 = 10

5 = 15

6 = 21

7 = 28

8 = 36

9 = 45

10 = 55

If there are 55 containers and 29 are knocked down, we do

55 - 29 = 26

26 containers remain

Cocoa · Answer 2

26 are left. Its just addition then subtraction.