what is a predecessor and a successor????

Predecessor of whole number is one less than the given number.

Let the given number be 5.

Therefore predecessor of 5 = 5 – 1 = 4

Successor of a whole number is the number obtained by adding 1 to it.

Let the given number be 5.

Therefore, successor of 5 = 5 + 1 = 6

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 to go before, as in place, order, rank,or time means predessor.

to go after,as in place,order,rank or time means successor.

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predecessor means -1 from given question.eg-100-1=99.

successor means +1 to given question.eg-100+1=101

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