Math, asked by gauranshgupta04, 3 months ago

There are eleven balloons floating in a big box. If one balloon clashes with another only once, how many clashes have there been?

Answers

Answered by amitnrw

0

Given : eleven balloons floating in a big box.

one balloon clashes with another only once,

To Find : Number of clashes

Solution:

Total Balloons = 11

one balloon clashes with another only once

For a clash 2 balloons are required

Number of ways to select 2 balloons from 11 are given by ¹¹C₂

= 11 * 10 / 2

= 11 * 5

= 55

Hence 55 clashes

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