next number of the sequence 4, 12, 60, 420, 3780...........will be

M4maths Previous Puzzles

08 Oct 2012 sequence

next number of the sequence
4, 12, 60, 420, 3780...........will be

OPtion

1) 41580
2) 39540
3) 40320
4) 42680
5) 42440
6) 40210
7) 39850
8) 43960
9) 43210
10) none of these

Solution

4, 12, 60, 420, 3780
12/4 = 3
60/12 = 5
420/60 = 7
3780/420 = 9
next number = 3780*11 = 41580

Correct Option: 1 Best Solution (21)

souvik mondal   11 years AGO

12/4=3
60/12=5
420/60=7
3780/420=9
Ans/3780=11
so,ans=3780*11=41580

Like? Yes (13) | No (6)  

Dr.Dipin Singh   11 years AGO

next number of the sequence
4, 12, 60, 420, 3780...........will be


1) 41580

4*3=12
12*5=60
..
..
3780*11 ( next odd number )= 41580

Like? Yes (7) | No (3)  

Balakumaran N.A   11 years AGO

Sequences are Multiplied by 3,5,7,9,11...
so, 3780*11= opt 1.

Like? Yes (3) | No (3)  

ArunKumar   11 years AGO

4 *3 12
12 * 5 =60
60* 7 =420
420* 9 = 3780
3780 * 11 = 41580

Like? Yes (3) | No (3)  

lakshmikarna   11 years AGO

4*3=12
12*5=60
...
3780*11=41580

Like? Yes (3) | No (4)  

Ashutosh Ranjan   11 years AGO

4*3=12
12*5=60
60*7=420
420*9=3780
hence 3780*11=41580(next odd number to 9 is multiplied to previous number)

Like? Yes (2) | No (3)  

Ankit   11 years AGO

4 * 3 = 12
12 * 5 = 60
60 * 7 = 420
420 * 9 = 3780
3780* 11= 41580

Like? Yes (2) | No (3)  

prem kumar.s   11 years AGO

4*3=12
12*5=60
60*7=420
420*9=3780
3780*11=41580
so option 1st is correct

Like? Yes (2) | No (3)  

Vignesh   11 years AGO

4 *3 = 12
12 *5 = 60
60 *7 = 420
420 *9 = 3780
3780*11 = 41580

Like? Yes (2) | No (4)  

Ajay Kashyap   11 years AGO

pattern is
4*3 = 12
12*5 =60
60*7 = 420
420*9 = 3780
3780*11= 41580

Like? Yes (2) | No (4)  

Balakrishnan M   11 years AGO

4, 12, 60, 420, 3780...........
4*3=12
12*5=60
60*7=420
420*9=3780
3780*11=41580

Like? Yes (1) | No (3)  

Sri Harsha   11 years AGO

4*3=12
12*5=60
60*7=420
420*9=3780
3780*11=41580

Like? Yes (2) | No (4)  

anand kumar maurya   11 years AGO

4*3=12
12*5=60
60*7=420
420*9=3780
3780*11=41580

Like? Yes (1) | No (3)  

swapnil gavtade   11 years AGO

4*3=12
12*5=60
60*7=420
420*9=3780
3780*11=41580

Like? Yes (1) | No (3)  

DEEPU KUMAR   11 years AGO

3780*11=41580 as series is like multiplication of 4*3, 12*5 ,60*7 ,420*9 ,3780*11

Like? Yes (1) | No (3)  

piyushkumar   11 years AGO

12/4=3
60/12=5
420/60=7
3780/420=9
hence in series 3,5,7,9....next should b 11
x/3780=11
x=41580..

Like? Yes (1) | No (3)  

sagar arora   11 years AGO

every other number is being multiplied by the odd nos starting from 3 going on like
4*3=12
12*5=60
60*7=420
420*9=3780
3780*11=41580

Like? Yes (1) | No (4)  

susmit   11 years AGO

4*3=12
12*(3+2)=60
60*(3+2+2)=420
420*(3+2+2+2)=3780
SO NEXT NO. IS 3780*(3+2+2+2+2)=41580. OPTION NO.1

Like? Yes (1) | No (4)  

Ganga Prasad Bhusal   11 years AGO

4*3=12
12*5=60
60*7=420
420*9=3780
3780*11=41580

Like? Yes (1) | No (4)  

rambabu yalla   11 years AGO

multiply each number by odd number strating from 3
3780*11=41580

Like? Yes (1) | No (4)  

Narender Bhardwaj   11 years AGO

4, 12, 60, 420, 3780
4*3=12
12*5=60
60*7=420,
420*9=3780,
hence next term=3780*11=41580

Like? Yes (1) | No (5)