What is the product of the greatest number of five digits and the greatest number of three digits?

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

99899001

95499001

99900100

998745001

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

We know that 99999 is the largest 5-digit number.
Also, we know that 999 is the largest three-digit number.
When we multiply the two terms we obtained, we get,

99999 × 999 = (100000 − 1) × (1000 − 1) = 100000 × 1000 − 1 × 1000 + 100000 × (− 1) − 1 × (− 1) = 100000000 − 1000 − 100000 + 1 = 1000 (100000 − 1 − 100) + 1 = 1000 (99999 − 100) + 1 = 1000 (99899) + 1 = 99899000 + 1 = 99899001

Thus, 99899001 will be the result of the biggest number of three digits plus the greatest number of five digits.
Therefore, the correct option is 1.

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th