| Find the next number in the series 7, 12, 40, 222, 1742, 17390, ?
Choose the correct answer from below list
(1)13640
(2)24560
(3)30560
(4)198760
(5)208608
Answer:-(5)208608
Note:-7x2-2= 12,12x4-(2+6)=40,40x6-(8+10)=222,222x8-(18+14)=1744,1744x10-(32+18)=17390,17390*12-(50+22)=208608 | | |