125,80,45,20,?

A. 5 B. 8
C. 10 D. 12

• A. 5
  
  Series decreased by 5 *9,5 *7,5 *5,5 *3(i.e, 45,35,25,15)
  
  125-45 =80
  80 -35 =45
  45 -25 =20
  20 -15 =5
  
  Final sequence = 125,80,45,20,5
• 12 years agoHelpfull: Yes(7) No(0)
• 125-45=80
  80-35=45
  45-25=20
  20-15=5
  thus option is A. 5
• 12 years agoHelpfull: Yes(2) No(1)
• Ans: A - 5
  5*(5*5) ,5*(4*4) ,5*(3*3) ,5*(2*2) ,5*(1*1)
  125,80,45,20,5
  
• 7 years agoHelpfull: Yes(0) No(0)
• 5*25=125
  5*16=80
  5*9=48
  5*4=20
  multiply 5 with 2*2
  3*3
  4*4
  5*5......
• 7 years agoHelpfull: Yes(0) No(0)