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2. Ten marbles form a triangle. What is the least number of marbles you need to change position in order to turn the triangle upside down?

2. Ten marbles form a triangle. What is the least number of marbles you need to change position in order to turn the triangle upside down?

College Algebra
College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 40SE: A family consisting of 2 parents and 3 children is to pose for a picture with 2 family members in...
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2. Ten marbles form a triangle. What is the least number of marbles you need to change position in order to turn the triangle upside down? 3. The game of dominoes is played with black and white tiles. Each tile is divided into two halves and on each half a number from 0-6 is represented in the form of dots. Each tile contains a pair of numbers and each pair appears only once in a complete set. How many tiles are there in a complete set of tiles?
Transcribed Image Text:2. Ten marbles form a triangle. What is the least number of marbles you need to change position in order to turn the triangle upside down? 3. The game of dominoes is played with black and white tiles. Each tile is divided into two halves and on each half a number from 0-6 is represented in the form of dots. Each tile contains a pair of numbers and each pair appears only once in a complete set. How many tiles are there in a complete set of tiles?
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