Two numbers a and b are chosen from the set 1,2,.., 3n In how many ways can these integers be selected such that (i)a -b² is divisible by 3?

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter2: Working With Real Numbers
Section2.7: Problem Solving: Consecutive Integers
Problem 14OE
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Two numbers a and b are chosen from the set [1,2, 3n In how many
ways can these integers be selected such that (i)a -b is divisible by 3?
Transcribed Image Text:Two numbers a and b are chosen from the set [1,2, 3n In how many ways can these integers be selected such that (i)a -b is divisible by 3?
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