Sunday, June 14, 2015

Pattern Recognition - 41

Find the next number in the series.

279, 358 , 437 , 516, _ ,.................

Answer


279, 358 , 437 , 516, _ ,.................

2 , 3 , 45, 6,.........

7 , 5 , 31, -1,.........

9 , 8  , 76, 5,.........

So the answer is suppose to be  6 -1 5  Oops I did not realize there we go to minus range. There is really no answer if we consider this pattern. :)

But the same person who answered to the "Math IQ" has given an excellent answer to this too. :)


Maybe the answer could be:
 
( ( x + 1) x 100) + ( (9 - 2x) x 10 ) + (10 - x )
 
 
so for x = 1:
 
((2) x 100) + ( (9 - 2) x 10 ) + (9) = 279
 
x = 2:
 
((3) x 100) + ((9 - 4) x 10) + (8) = 358
 
x = 3:
 
((4) x 100) + ((9 - 6) x 10) + (7) = 437
 
x = 4
 
((5) x 100) + ((9 - 8) x 10 ) + (10 - 4) = 516
 
So then the next in the sequence would be:
 
x = 5
 
((6) x 100) + ((9 - 10) x 10) + (10 - 5) = 600 - 10 + 5 = 595
 
and so on.....
 
And the equation at the top can be rewritten more simply as:
 
79x + 200
 
and that will give the same result:
 
x = 1: 79 + 200 = 279
x = 2: 158 + 200 = 358
x = 3: 237 + 200 = 437
x = 4: 316 + 200 = 516
x = 5: 395 + 200 = 595


After I checked the above answer only I realized there is another pattern in the series.

27  9, 35  8 , 43  7 , 51  6, _ ,.................
27 , 35 , 43 , 51 , 59, .............................
    +8   +8   +8  +8
987  ,  65,.......................
   -1  -1  -1   -1

Answer 59 5    595

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