Q. 195.0( 1 Vote )

Let * be a binary operation on N given by a * b = HCF (a, b), a, b N. Write the value of 22 * 4.

Answer :

The given binary operation is a*b = HCF(a,b)

We have to find the value of 22*4

Applying the relation we have

22*4 = HCF(22,4) = 2

Hence the required solution is 2.

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On the set Q of all rational numbers if a binary operation * is defined by , prove that * is associative on Q.

RD Sharma - Volume 1