1,9,25,49,?,121 want answer

• difference b/w two terms are 8*1,8*2,8*3.....
  5th term will be...49+8*4 = 49+32 = 81
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• 81:
  1^2,3^2,...,9^2...
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• ans=81
  since its the square of odd numbers 1^2,3^2,5^2,7^2,9^2,11^2
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• alternate odd numbers starting from 1 to 11 are squared. i.e. 1,3,5,7,9 and 11 are squared.
  square(9) is missing. so the answer is 81.
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• these are the prime numbers expressed as a square of each..so missing term is no. 9=> 9*9=81
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• 9^2=81
  odd numbers
  
  
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• Ans=81
  
  1*1=1
  3*3=9
  
  ||ly
  9*9=81
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• 81(squares of odd numbers )
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• 1^2 3^2 like that 9^2=81
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• 1*1, 3*3, 5*5, 7*7, 9*9, 11*11
  Missing number is 81
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• The series is the squares of the odd numbers i.e., 1^2,3^2,5^2,7^2,9^2,11^2 i.e.,
  1,9,25,49,81,121
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• 1 + 1 + (1*7) = 9
  9 + 2 + (7*2) = 25
  25 + 3 + (3*7) = 49
  49 + 4 + (4*7) = 81
  81 + 5 + (5*7) = 121
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• 1^2 =1 , 3^2=9 , 5^2=25 ,7^2=49 ,9^2=81 ,11^2=121.
  ans is 81
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• 1^2 =1
  3^2=9
  
  It is square of odd numbers so the answer is 81 (9^2).
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• next odd number 9 so 9^2=81
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• 9=square of odd numbers
  
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• 81 is the answer
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• 1^2, 3^2, 5^2,7^2,.....,11^2.= all odd number square so 9^2=81
• 6 years agoHelpfull: Yes(0) No(0)