next number of the sequence 12, 19, 68, 411, 2812 ............. will be

M4maths Previous Puzzles

21 Jan 2013 sequence next number of the sequence 12, 19, 68, 411, 2812 ............. will be: OPtion
1) 17659
2) 19619
3) 20113
4) 21349
5) 22349
6) 23497
7) 25479
8) 29954
9) 30123
10) none of these; Correct Option: 2 Best Solution (20)

Jagat 11 years AGO

next number of the sequence
12, 19, 68, 411, 2812 ............. will be 19619.
difference in numbers are
7,49,343, 2401.
next difference will be 2401*7= 16807
next number will be 16807+2812= 19619

Like? Yes (5) | No

Rameshkumar 11 years AGO

12+7=19
19+7^2=19
.
.
.
2812+7^5=19619

Like? Yes (1) | No

RENUGADEVI S 11 years AGO

i)diff b/w these nos(12,19)=7
19,68=49
(68,411)=343
2812,411=2401
ii)49/7=7,343/47=49,2401/7=343,so 2401*7=16807and 16807+2812=19619

Like? Yes (1) | No

nivetha91 11 years AGO

the difference between the numbers are 7,49,343,2401,16807.All the numbers are squares of 7 ie..7,7^2,7^3,7^4,7^5...

Like? Yes (1) | No

venkata mounica alapati 11 years AGO

19-12=7^1
68-19=7^2
411-68=7^3
2812-411=7^4
so,2812+7^5=19619

Like? Yes (2) | No (2)

jai Narayan Mishra 11 years AGO

THE SERIES WILL FOLLOW THE PATTERN OF 12,12+7,19+7^2,68+7^3,411+7^4,2812+7^5
....
12,19,68,411,2812,19619

Like? Yes (2) | No (3)

kirti komal 11 years AGO

The sequence is
12,19,68,411,2812,....
19-12=7, 68-19=49, 411-68=343, 2812-411=2401,
the differences are multiple of 7 i.e 7,49,343,2401.
so, next difference will be 2401*7=16807.
so, the next number is 2812+16807=19619.
so, ans. 2) 19619

Like? Yes (1) | No (2)

Muhammad Nadeem Haider Naseem 11 years AGO

12,19,68,411,2812,.......
19-12=7
68-19=49=7*7
411-68=343=49*7
2812-411=2401=343*7
2401*7=16807+2812=19619

Like? Yes (1) | No (2)

Vinay Sipani 11 years AGO

12 , (12 + 7) , ( 12 + 7 + 49 ) , (12 + 7 + 49 + 343) ,
(12 + 7 + 49 + 343 + 2401)

=> next term = (12 + 7 + 49 + 343 + 2401 + 16807) = 19619

Like? Yes (1) | No (2)

susmit 11 years AGO

differences between given nos. are
7,7^2, 7^3,7^4
hence the next difference will be 7^5=16807
so he next no. will be 2812+16807=19619,option no 2

Like? Yes (1) | No (2)

Balakumaran N.A 11 years AGO

sequence increasing by 7,49,343,2401,16807,...
16807+2812=opt 2.

Like? Yes (1) | No (2)

NEERAJA REDDY 11 years AGO

the difference between the first 2 numbers is 7..
next 2 numbers is 49...
next 2 numbers is 343...
next 2 numbers is 2401...
Hence the difference between the 2 numbers = last 2 numbers difference * 7..
Hence the difference between the next 2 numbers is... 16807...
hence the next number= previous number+ difference..
I.E 2812+16807 i.e 19619

Like? Yes (1) | No (2)

abhishek mishra 11 years AGO