Q. Predict the next number
2,20,10,100,50

• Look upon the series carefully
  2,20,10,100,50...
  2 * 10 = 20
  20/ 2 = 10
  
  10 * 10 = 100
  100/2 = 50
  
  similarly
  50 * 10 = 500
• 10 years agoHelpfull: Yes(5) No(0)
• 500
  Multiply by 10 & divide by 2
  [2*10=20],[20*1/2=10],[10*10=100],[100*1/2=50],[50*10=500],..
  
• 10 years agoHelpfull: Yes(2) No(0)
• two sequences... (multiply by 5)
  2, 10, 50
  20,100.... 500
• 10 years agoHelpfull: Yes(2) No(2)
• two sequence....
  2,10,50..
  20,100,...
  multiplying each no in the sequence by 5
  so.. next no will be 500(100*5)
• 10 years agoHelpfull: Yes(0) No(0)
• 2*5=10*=50 like this 20*5=100*5=500.
• 10 years agoHelpfull: Yes(0) No(0)
• 500
  series is 2*10=20
  10*10=100 50
  therefore 50*10=500
• 10 years agoHelpfull: Yes(0) No(0)
• thr 2 series
  2*5=10 10*5=50
  20*5=100
  ans=100*5=500
• 10 years agoHelpfull: Yes(0) No(0)
• in this puzzle next series number is depend on resultant series
  so first number is 2
  second number is 2*10=20 (multiply with 10 in previous resultant number)
  third number is 20/2=10 (half of previous resultant number)
  fourth number is 10*10=100 (multiply with 10 in previous resultant number)
  fifth number is 100/2=50 (half of previous resultant number)
  sixth number is 50*10=500 (multiply with 10 in previous resultant number)
  so the resultant next series number is 500 .........answer
• 10 years agoHelpfull: Yes(0) No(0)
• 2*10=20
  20/2=10
  10*10=100
  100/2=50
  50*10=500
  So next number is 500
• 10 years agoHelpfull: Yes(0) No(0)