CrazyBoy's Crazy series...

Replies

• 

  RajdeepCE

  The next number is 14.
  The explanation behind this is that,
  23 = (2+3)*5 = 15
  54 = (5+4)*4 = 36
  83 =(8+3)*3 = 33
  so 43 = (4+3)*2 = 14
  
• 

  Anil Jain

  RajdeepCE

  The next number is 14.
  The explanation behind this is that,
  23 = (2+3)*5 = 15
  so 43 = (4+3)*2 = 14
  

  Its wrong...
  (2+3)*5=25 😁
  
  Also answer is wrong..
  
  -CB
• 

  RajdeepCE

  Oops. I have done huge mathematical mistake in hurry.
  Here is another try,
  23 = (2+3)*3 = 15,
  54 = (5+4)*4 = 36,
  83 = (8+3)*3 = 33,
  43 = (4+3)*4 = 28.
  Let me know that this time I am right or not?
  
• 

  safwan

  😕😕:?:
  understood the serees of rajdeep but not of CB.
• 

  shalini_goel14

  crazyboy

  If
  
  23 = 15
  
  54 = 36
  
  83 = 33
  
  Then
  
  43 = ?
  
  -CB

  One trial from my side also
  (2+3) * 3[last digit]=15
  (5+4) * 4 =36
  (8+3) * 3= 33
  
  so 43 will be (4+3) * 3 =21
  
  Am I right?
• 

  Anil Jain

  shalini_goel14

  One trial from my side also
  (2+3) * 3[last digit]=15
  (5+4) * 4 =36
  (8+3) * 3= 33
  
  so 43 will be (4+3) * 3 =21
  
  Am I right?

  You got it right Shalini... , Have you taken Idea from Rajdeep's solution... Be true???
  
  @ Rajdeep - I hope you noticed your error again.
  
  @ Safan - Do you need explanation Now???
  
  -CB
• 

  Anil Jain

  How about this...
  
  3 12 55 240 ??? ???
  
  -CB
• 

  ms_cs

  whether it is 1200 4800 ?
• 

  Anil Jain

  whether it is 1200 4800 ?

  Wrong... .
• 

  swapnakumar

  is it 987????
• 

  RajdeepCE

  3,12,55,240,999,4060,...
  Let me know, is it right or not?
• 

  Anil Jain

  RajdeepCE

  3,12,55,240,999,4060,...
  Let me know, is it right or not?

  Thats right...
  
  Please explain this as welll....
  
  -CB
• 

  RajdeepCE

  Ok, here is explanation,
  3
  (3*4)+0=12,
  (12*4)+7=55,
  (55*4)+20=240,
  (240*4)+39=999,
  (999*4)+64=4060,
  The addition series 0,7,20,39,64,... is derived as follows,
  0,
  0+7=7,
  7+7+6=20,
  20+7+6+6=39,
  39+7+6+6+6=64...and so on.
  Hope you all understand the series now.
• 

  Anil Jain

  😀 Good try...
  
  Easier and another method to solve would be..
  
  4^1-1^2 = 3
  4^2-2^2 = 12
  4^3-3^2 = 55
  
  And so on.....
  
  4^5-5^2 =
  4^6-6^2 =
  
  Answers 😀
  
  -CB
• 

  RajdeepCE

  One doubt here CB,
  4^5-5^5 and 4^6-6^6 both are negative as per me. What you say?
• 

  Saandeep Sreerambatla

  Hey the 4th element would be 4POW4 - 4pow4 =0 , not 240.
  
  next elements will be negative .
• 

  CEMember

  RajdeepCE

  One doubt here CB,
  4^5-5^5 and 4^6-6^6 both are negative as per me. What you say?

  There is nothing wrong in the explanation, just CB Sir has typed it wrong , it shoud be like following
  
  4[sup]1[/sup]-1*1 = 3
  4[sup]2[/sup]-2*2 = 12
  4[sup]3[/sup]-3*3 = 55
  4[sup]4[/sup]-4*4 = 240
  4[sup]5[/sup]-5*5= 999
  4[sup]6[/sup]-6*6 = 4060
  
  And so on.....
• 

  Anil Jain

  Updated my last post, I was supposed to write:
  
  1^2, 2^2, 3^2, 4^2, 5^2, 6^2
  
  -CB