Answer to Question #344983 in Discrete Mathematics for Malik

Question

Determine weather the each of the following function from set (a,b c, d)to itself injective

1- the function sending the order quadruple (a,b,c,d)to (b,a,c,d)

2- the function sending the order quadruple (a,b,c,d)to (b,b,d,c)

3- The function sending the order quadruple (a,b,c,d) to ( b,d,c,d)

Answer 1

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