Question

Question 15
The product of successor and predecessor of 999 is
(A) 999000
(B) 998000
(C) 989000
(D) 1998

Answer 1

We know that, the successor of a whole number is the number obtained by adding 1 to it and the predecessor of a whole number is one less than the given number.
So, the successor of 999 = 999+1=1000
and the predecessor of 999 =999-1=998
$\therefore$ Product of successor and predecessor of 999= $1000\times 998$
=998000

Hence option B is correct.