8 12 24 60 ?

• 12-8:4
  24-12:12
  60-24:36
  X-60:108
  X:168
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• 180;
  8*1.5=12
  12*2=24
  24*2.5=60
  60*3=180
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• answer is 168 because the difference between tow consecutive numbers is in the series 4,12,36...hence 4*3=12...12*3=36....36*3=108.hence 108+60=168.so the complete series is 8,12,24,60,168.
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• 8,12,24,60,_
  12-8=4
  24-12=12
  60-24=36 here 4*3=12,12*3=36,36*3=108 so the series is 8,12,24,36,108
  
  
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