Question

find the sum and difference of the successor and presucessor of 999​

Answer 1

Answer:

sum of 1000+999=1999

difference of 999-998=1

Answer 2

${\huge{ \text{Sum = 1000 + 998}}} \\ \\ { \huge{ \text{ \: \: \: \: = {\red{1998}}}}}$

$<marquee>And,</marquee>$

${\boxed{\large{ \text{Difference = 1000 -- 998 = {\red{2}}}}}}$