Q. 185

Determine the sum of the four numbers as given below:

(a) successor of 32

(b) predecessor of 49

(c) predecessor of the predecessor of 56

(d) successor of the successor of 67

Answer :

Successor of 32 = 32 + 1 = 33


Predecessor of 49 = 49 - 1 = 48


Predecessor of predecessor of 56 = predecessor of 56 - 1 = 56 - 1 - 1 = 54


Successor of successor of 67 = successor of 67 + 1 = 67 + 1 + 1 = 69


Hence, their sum,


= 33 + 48 + 54 + 69


= 204


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