1,2,3,5,16 , What is next ?

Questions by zairkka

Showing Answers 1 - 6 of 6 Answers

231 ... there are several ways to come up with different next numbers in the series, this just seems the best as the formula to get it works on the whole series.

1 = abs((0^2) - (-1^2))
2 = abs((1^2) - (0^2))
3 = abs((2^2) - (1^2))
5 = abs((3^2) - (2^2))
16 = abs((5^2) - (3^2))
231 = abs((16^2) - (5^2))

Im guessing there are other possible answers out there.

  Was this answer useful?  Yes

amar agarwal

  • Apr 2nd, 2012
 

Answer is 79. 2*1+1=3,3*2-1=5,5*3+1=16,16*5-1=79.

sasikumar

  • Apr 7th, 2012
 

1+0*1;
1+1*1=2;
2+1*1=3;
3+2*1=5;
5+3*2*1=16;
16+5*3*2*1=126

  Was this answer useful?  Yes

rekharajan

  • Jun 29th, 2012
 

16*5-1=79

  Was this answer useful?  Yes

Rohit

  • Aug 24th, 2012
 

Answer is 42

Explanation:
Add prev 2 numbers (16+5), if the result is a prime number then the answer is the prime number, else it is twice of the result number (16+5=21, 21*2=42).

  Was this answer useful?  Yes

Give your answer:

If you think the above answer is not correct, Please select a reason and add your answer below.