Puzzle Contest-140 - Page 2

baaluaanand · 23-11-06, 12:03 PM

6!=720

vachu123 · 24-11-06, 10:11 PM

Quote:

Originally Posted by HELP

1)What number comes next in each sequence below?
1, 2, 6, 24, 120, ____

720

mca62515 · 14-12-06, 01:21 PM

it is very simple

the series is 1,2,6,24, 120,-------

here solu

1 * 2=2
2 * 3=6
6 * 4=24
24 * 5=120
120* 6=-------- 720

other way

1! =1
2! =2
3! =6
4! =24
5! =120
6! =-----720

monica_0285@yahoo.com · 15-01-07, 05:57 PM

1*2=2
2*3=6
6*4=24
24*5=120
120*6=720
720 is the answer

priyakumari · 17-01-07, 05:34 PM

i think this is a factorial of 1,2,3,4,5,6.
ans:7!=5040

avi21106 · 20-01-07, 09:42 AM

the answer is 120*6=720

satish007sinha · 08-04-07, 01:27 AM

next number will be 720
as in the sequence the next number comes multiplying number with next position in sequence like
1*2=2
2*3=6
6*4=24
24*5=120
so,
120*6=720

sp_potturi · 28-09-07, 12:06 PM

120*6=720

PrashanthU · 28-09-07, 01:50 PM

hi...

a more clear solution for the sequence 1,2,6,24,120,_ is as follows :

nth element in the series can be computed as follows :
(n-1)th element value * ( sequential position of the element in the sequence to be computed )

For example to get 6th element :
(n-1)th element value is (5th element) : 120
sequential position of the required element in the series : 6

Therefore the required element in the sequence is : 120 * 6 = 720

Regards,
Prashanth

Aravinthraj · 06-02-08, 08:49 PM

720......

23-11-06, 12:03 PM	#16 (permalink)
baaluaanand Junior Member Join Date: Nov 2006 Age: 24 Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 2	Re: Puzzle Contest-140 6!=720

14-12-06, 01:21 PM	#18 (permalink)
mca62515 Junior Member Join Date: Sep 2006 Age: 26 Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 3	Re: Puzzle Contest-140 it is very simple the series is 1,2,6,24, 120,------- here solu 1 * 2=2 2 * 3=6 6 * 4=24 24 * 5=120 120* 6=-------- 720 other way 1! =1 2! =2 3! =6 4! =24 5! =120 6! =-----720

15-01-07, 05:57 PM	#19 (permalink)
monica_0285@yahoo.com Junior Member Join Date: Jan 2007 Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 3	Re: Puzzle Contest-140 12=2 23=6 64=24 245=120 1206=720 720 is the answer*

17-01-07, 05:34 PM	#20 (permalink)
priyakumari Junior Member Join Date: Jan 2007 Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 2	Re: Puzzle Contest-140 i think this is a factorial of 1,2,3,4,5,6. ans:7!=5040

20-01-07, 09:42 AM	#21 (permalink)
avi21106 Junior Member Join Date: Jan 2007 Age: 26 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 2	Re: Puzzle Contest-140 the answer is 120*6=720

08-04-07, 01:27 AM	#22 (permalink)
satish007sinha Junior Member Join Date: Apr 2007 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 2	Re: Puzzle Contest-140 next number will be 720 as in the sequence the next number comes multiplying number with next position in sequence like 12=2 23=6 64=24 245=120 so, 120*6=720

28-09-07, 12:06 PM	#23 (permalink)
sp_potturi Junior Member Join Date: Sep 2007 Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 1	Re: Puzzle Contest-140 120*6=720

28-09-07, 01:50 PM	#24 (permalink)
PrashanthU Senior Member Join Date: Jan 2007 Age: 27 Posts: 103 Thanks: 0 Thanked 7 Times in 5 Posts Thanks: 0 Thanked 7 Times in 5 Posts Rep Power: 4	Re: Puzzle Contest-140 hi... a more clear solution for the sequence 1,2,6,24,120,_ is as follows : nth element in the series can be computed as follows : *(n-1)th element value ( sequential position of the element in the sequence to be computed ) For example to get 6th element : (n-1)th element value is (5th element) : 120 sequential position of the required element in the series : 6 Therefore the required element in the sequence is : 120 * 6 = 720 Regards, Prashanth __________________ " Success Is Not Measured By What One Has Achieved, But What One Has Achieved, Compared To What One Is Capable Of " Keep Smiling :-)**

06-02-08, 08:49 PM	#25 (permalink)
Aravinthraj Junior Member Join Date: Jan 2008 Age: 20 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 1	Re: Puzzle Contest-140 720......

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