Jee Main
Sequences And Series
JEE Main 2021 (Online) 31st August Morning Shift
MCQ+4 / -12021
Three numbers are in an increasing geometric progression with common ratio r. If the middle number is doubled, then the new numbers are in an arithmetic progression with common difference d. If the fourth term of GP is 3 r2, then r2 \(-\) d is equal to :
