help@askiitians.com
1800-150-456-789
Courses
Live
Resources
Exam Info
Forum
Notes
Login
BACK
Discuss with colleagues and IITians
>
undefined
Multiply by 18: Multiply by 20 and subtract twice the original number (which is obvious from the first step).
Saurabh Mishra
, 10 Years ago
Grade 11
1 Answer
NANDA
Last Activity: 10 Years ago
Provide a better Answer & Earn Cool Goodies
ANSWER