Question

Evaluate 999 multiple 999

Answer 1

Answer:

Step-by-step explanation:

999X999

We can write 999 as (1000-1)

So (1000-1)x(1000-1)

This is in the form (a-b)(a-b) = a^2 -2ab +b^2

So (1000x1000)-2x1000x1+(1x1)

1000000-2000+1

1000000-1999

Which gives the answer as =998001