Question

Q3. Without actual multiplication find the value of : 1001 X 999.

Answer 1

Step-by-step explanation:

(a+b)×(a-b)

=a^2 - b^2

(1000+1)×(1000-1)

1000×1000-1×1

1000000-1

999999

Answer 2

Step-by-step explanation:

done this the solution