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# Number puzzle

Ranch Hand
Posts: 91
Hi all,

289 => 187262
456 => 202492
748 => 283206
387 => ?

my observation:

289 => take 9 => 9*2=18, 9*8=72, 9*2+8=26 --> reverse it => 62 ==> 187262
456 => take 4 => 4*5=20, 4*6=24, 4*6+5=29 --> reverse it => 92 ==> 202492
748 => take 4 => 7*4=28, 4*8=32, 7*8*4=60 --> reverse it => 06 ==> 283206

so 387 ==> take 7 ==? 7*3=21, 7*8=56, 7*3+8=29 --> reverse it => 92 ==> 215692

Do you think I am correct. Or any suggestions or ideas? Help me please..

Marshal
Posts: 25965
70
You used a different rule for 289 (start by multiplying the first and third digits) compared to the other two (start by multiplying the first and second digits). Why was that?

Muthukrishnan Manoharan
Ranch Hand
Posts: 91