Question

The number that we obtain on subtracting the first natural number from a given number is called the ________( predecessor/successor) of that number.

Answer 1

Predecessor: The predecessor of a natural number is one less than the given number. In the other words if we subtract $1$( first natural number) from the given number we get the predecessor of that number.

For example; let's take a natural number$4$,

The predecessor of $4is=4-1=3$

Hence, the correct answer is predecessor.