Let $$ be the binary operation on $N$ , given by $a b = L C M$ of $a$ and $b$ . Find $20 * 16$ .

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Solution

20 * 16 = L.C.M of 20 and 16 = 80

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Similar questions

*

N

a * b =

a

b

5 * 7

20 * 16

(ii) Let $*$ be the binary operation on N given by a * b= ab

(a) Find 20 $*$ 16

(b) Find the identity of $*$ in N

Let $*$ be the binary operation on N given by $a * b = L C M$ of a and b.
(i) Find the identity of $*$ in N

*

N

a * b =

a

b

Let $*$ be a 'binary' operation on N given by $a * b = L C M (a, b)$ for all $a, b$ $ϵ$ $N$ .

Find $5 * 7$ .

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