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1. Relations
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Q14 of 109 Page 1

If A = {3, 5, 7} and B = {2, 4, 9} and R is a relation given by “is less than”, write R as a set ordered pairs.

Given A = {3, 5, 7} and B = {2, 4, 9}


Now according to the condition:


R is a relation given by “is less than.”


⇒ R= A × B


⇒ R={(3,4),(3,9),(5,9),(7,9)}


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A = {1, 2, 3, 4, 5, 6, 7, 8} and if R = {(x,y) : y is one half of x; x, y ϵA} is a relation on A, then write R as a set of ordered pairs.

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Let A = {2, 3, 4, 5} and B = {1, 3, 4}. If R is the relation from A to B given by a R b iff “a is a divisor of b.” Write R as a set of ordered pairs.

Questions · 109
1. Relations
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