wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which of the following identities can be used to solve 1001 × 999?

A
(a+b)×(ab)=a2b2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
(a+b)2=a2+2ab+b2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
(ab)2=a22ab+b2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of the above
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A (a+b)×(ab)=a2b2
1001×999=(1000+1)(10001)=1000212

Using the identity,
(a+b)× (ab)=a2b2
=10000001=999999

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon