Latest L&T Aptitude Question SOLUTION: What is the next number in this series? 4,12,84,3612....

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(#M40040427) L&T Logical Reasoning question series Keep an EYE

What is the next number in this series?

4,12,84,3612....

Asked In L&T v.d (9 years ago)

Unsolved Read Solution (9)

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Read Solution (9) :

srimant  (9 years ago)

6526884

((4^2)/2)+4=12
((12^2)/2)+12=84
((84^2)/2)+84=3612
((3612^2)/2)+3612=6526884

Is this solution Helpfull? Yes (18) | No (1)  

ankit thakur  (7 years ago)

4*3 = 12, 12 *7 = 84, 84*43 = 3612 ,3612*1807 = 6526884
3= 4/2 +1, 7 = 12/2 +1, 43 = 84 / 2 +1 , 1807 = 3612/2 +1

Is this solution Helpfull? Yes (3) | No   

adit choudhary  (9 years ago)

4*(2*1+1)=12

12*(3*2+1)=84 // 3*2+1=7 and multiply it by 6 add +1 and multiply in 84 to get result

84*(7*6+1)=3612

3612(43*42+1)=6526884

Is this solution Helpfull? Yes (2) | No   

MIKKI SINHA  (9 years ago)

(4)^2/2+4=12
((12)^2)/2+12=84
((84)^2)/2+84=3612
((3612)^2+3612=6526884

Is this solution Helpfull? Yes (2) | No   

sneha bharti  (9 years ago)

(3612^2/2)+3612+6526884

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shamshir  (8 years ago)

4 == 1 2 2 4

take last two ( 2 & 4)--->> (2+1)*4==12

12 == 1 2 3 4 6 12

take last two (6 & 12)----> (6+1)*12==84

84 ==1 2 ......... 42 84

take last two (42 & 84)----> (42+1)*84== 3612

3612 ==1 2 ......... 1806 3612

take last two (1806 & 3612)----> (1806+1)*3612== 6526884


correct me if i m wrong plzzzzzzzzzzzzzzzzz....
thankxxxxxxxxxxxxxxxxxx :-)

Is this solution Helpfull? Yes (1) | No (1)  

Abhishek birkh  (9 years ago)

(3612^2)/2+3612=6526884

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Chirag Ranjan Lahiri  (9 years ago)

(3612^2)/2+3612=6526884

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MUKESH KUMAR  (7 years ago)

12/4=3
84/12=3*(3-1)+1=7
3612/84=7*(7-1)+1=43
so ,ans=3612*[43*(43-1)+1]=6526884

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