Find the next no.
82, 51, 28, 20, ?

• 82=9^2+1
  51=7^2+2
  28=5^2+3
  20=4^2+4
  then next no is
  3^2+5=14
• 10 years agoHelpfull: Yes(52) No(26)
• 82-28-3=51
  51-20-3=28
  similarly,
  28-x-3=20
  hence x=5.
  
• 10 years agoHelpfull: Yes(27) No(6)
• 82-51 =31;
  51-31=20;
  51-28=23;
  28-23=5;
  hence 5 is answer
• 10 years agoHelpfull: Yes(15) No(33)
• 5, 82-51=31
  51-28=23
  28-20=8
  23+8=31
  x+8=23=> x=15
  20-15=5
• 10 years agoHelpfull: Yes(6) No(0)
• 82-51-3=28
  51-28-3=20
  28-20-3=5
  ans = 5
• 10 years agoHelpfull: Yes(5) No(0)
• 82=9^2+1
  51=7^2+2
  28=5^5+3
  20=4^2+4
  14=3^2+5
  thus the next no is 14.
• 10 years agoHelpfull: Yes(4) No(0)
• 82-51=31 the next no is 31-3=28
  51-28= 23 the next no is 23-3=20
  so next no is 8-3 =5
• 10 years agoHelpfull: Yes(3) No(0)
• 82=9^2+1
  51=7^2+2
  28=5^2+3
  20=4^2+4...now see that 82,28 is in a series for 9 and 5
  and 51 and 20 in a series for 7 and 4...so the next wl be 1^2+5=6
  coz 9-4=5 and 5-4=1
• 10 years agoHelpfull: Yes(2) No(3)
• the following sequence goes by the pattern (9^2+1),(7^2+2),(5^2+3),(4^2+4),...
  so going by the sequence of the odd numbers being squared and one sucessive no.being added,the next no is 3^2+5=14
• 10 years agoHelpfull: Yes(2) No(1)
• 14 is the ans
• 10 years agoHelpfull: Yes(2) No(1)
• 82 = 9^2+1
  51 = 7^2+2
  28 = 5^2+3
  20 = 4^2+4
  
  then next no is
  
  14 = 3^2+5
  
  NOTE [ We chose 3 as our next number bcz every alternate number has a differnce of 4 , 3 respectively then next difference should be 2]
  i.e. 9[1st number] - 5 [3rd number] = 4
  7[2nd number] - 4 [4th number] = 3
  5[3rd number] - 3 [next number] = 2.
• 10 years agoHelpfull: Yes(2) No(1)
• Ans is 5. 20+28+3=51 and28+51+3=82 hence x+20+3=28 So x=5
• 10 years agoHelpfull: Yes(1) No(1)
• 82-51=31
  51-28=15
  28-20=8
  20-x=?
  31-28=8
  23-8=15
  20-x=15
  x=5
  
• 10 years agoHelpfull: Yes(1) No(3)
• pls explain
• 10 years agoHelpfull: Yes(1) No(0)
• ans is 14
  9*9+1=82
  7*7+2=51
  5*5+3=28
  4*4+4=20
  3*3+5=14
  
• 10 years agoHelpfull: Yes(1) No(0)
• 5
  5+20=25
  25+3=28
  
  
• 10 years agoHelpfull: Yes(0) No(1)
• 82-51=31
  51-28=23:31-23=8
  28-20=8;23-8=15
  therefore next number is 20-15=5
  
  
• 10 years agoHelpfull: Yes(0) No(1)
• ans will be 9
• 10 years agoHelpfull: Yes(0) No(0)
• 9*9+1=82
  7*7+2=
  proceeding in this way
  3*3+5=14
• 10 years agoHelpfull: Yes(0) No(2)
• 5,difference of 82 & 51 is 31,51 & 28 is 23, but difference of 31 & 23 is 8 which is same to difference of 28 & 20, so the next no. is 5.
• 10 years agoHelpfull: Yes(0) No(1)
• ans will be 5
  
• 10 years agoHelpfull: Yes(0) No(0)
• 9^2+1=82
  7^2+2=51
  5^2+3=28
  4^2+4=20
  3^2+5=14
  
  
• 10 years agoHelpfull: Yes(0) No(0)
• 82=9^2+1
  51=7^2+2
  28=5^2+3
  20=4^2+4
  then next no is
  3^2+5=14
• 10 years agoHelpfull: Yes(0) No(0)
• 82= 9^2+1
  51=7^2+1
  28=5^2+2
  20=3^2+3
  NEXT NO. 1^2+4=5
• 10 years agoHelpfull: Yes(0) No(3)