Relations and Functions

Relations and Functions

Question

Write the following in set-builder form :

(a) A = {2, 4, 6, 8, 10......} 

(b) B = {5, 10, 15, 20,...... 100}

(c) C = {1, 2, 3, 4, 6, 12, 18,36}

Answer

(a)    {x : x = 2n, nspace space space element of N}
(b)    {x : x = 5n, nspace space element of N, n space space less or equal than space 20}
(c)    {x : x space space space element of N, x is a divisor of 36}

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