9,19,40, ? ,146

• Ans is 69
  The pattern is the square of prime no. + multiple of 5
  2^2+5=9
  3^2+10=19
  5^2+15=40
  7^2+20=69
  11^2+25=146
• 10 years agoHelpfull: Yes(44) No(3)
• this qs contains last digit wrong...
  
  Ans. 83
  
  as 9*2+1=19
  19*2+2=40
  40*2+3=83
  83*2+4=170
• 10 years agoHelpfull: Yes(8) No(20)
• 9*3+13*1=40 19*3+13*1=70 40*3+13*2=146 70*3+13*2=236
• 8 years agoHelpfull: Yes(0) No(1)
• 2*2+5=9
  3*3+10=19
  5*5+15=40
  7*7+20=69
  11*11+25=146
• 5 years agoHelpfull: Yes(0) No(0)