What is the next number in below series
1,3,9,29,71, ?
|
Go4Expert Founder
|
 |
| 29Oct2009,14:58 | #2 |
|
Time Starts Now
|
|
Skilled contributor
|
|
| 29Oct2009,20:33 | #3 |
|
134
|
|
Contributor
|
|
| 30Oct2009,10:27 | #4 |
|
Quote:
Originally Posted by sameer_havakajoka How did you calculated it? |
|
Skilled contributor
|
|
| 30Oct2009,10:57 | #5 |
|
|
184
|
|
Skilled contributor
|
|
| 30Oct2009,11:42 | #6 |
|
|
213
|
|
Mentor
|
 |
| 30Oct2009,14:31 | #7 |
|
|
141
|
|
Go4Expert Founder
|
|
| 31Oct2009,09:49 | #8 |
|
|
Its already more than 24 hours and so new entries would not be counted and any entry before this post if correct wins or else OP wins
|
|
Contributor
|
|
| 2Nov2009,11:17 | #9 |
|
|
Consider the difference in sucessive numbers.
3-1 = 2 = 2^2 -2 = (1st prime no )^2 - (1st prime no ) 9-3 = 6 = 3^2 -3 = (2nd prime no )^2 - (2nd prime no ) 29-9 = 20 = 5^2 -5 = (3rd prime no )^2 - (3rd prime no ) 71-29 = 42 = 7^2 -7 = (4th prime no )^2 - (4th prime no ) So the answer is 71 + 11^2 - 11 = 181 |
|
Go4Expert Founder
|
|
| 2Nov2009,11:42 | #10 |
|
|
Just a suggestion. Try to reply faster if you are an OP of the competition.
|