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Strange Sequence (Posted on 2003-03-25) Difficulty: 4 of 5
What are the next two numbers in the following sequence ?

10, 40, 90, 61, 52, 63, 94, ? , ?

(Explain how you arrived at your result).

  Submitted by Ravi Raja    
Rating: 2.2500 (8 votes)
Solution: (Hide)
The next two numbers of the given sequence are: 46 and 18.

Here are the numbers in the given sequence :10, 40, 90, 61, 52, 63, 94, which are nothing but the whole squares of the first seven natural numbers written with the positions of their digits (Units and Tens Place) interchanged.

So, obviously the next two numbers have to be the squares of 8 and 9, written in a simlar fashion.

Therefore the required numbers are: 46 and 18.

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionPuzzle SolutionK Sengupta2008-02-26 11:56:57
AnnoyingLewis2003-04-21 22:40:38
Some ThoughtsPart 2,Reverse 64 and 81Tim Axoy2003-03-31 02:36:51
Hints/TipsPart 1,Reverses of squaresTim Axoy2003-03-31 02:36:06
Start at the middle?Gamer2003-03-25 08:50:05
SolutionComputeBryan2003-03-25 05:33:19
SolutionDon't be such a...Nick Murray2003-03-25 02:00:02
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