Maths
Maths Puzzle
Numerical Ability
Arithmetic
1,9,25,49,?,121 want answer
Read Solution (Total 18)
-
- difference b/w two terms are 8*1,8*2,8*3.....
5th term will be...49+8*4 = 49+32 = 81 - 10 years agoHelpfull: Yes(2) No(0)
- 81:
1^2,3^2,...,9^2... - 10 years agoHelpfull: Yes(1) No(0)
- ans=81
since its the square of odd numbers 1^2,3^2,5^2,7^2,9^2,11^2 - 10 years agoHelpfull: Yes(1) No(0)
- 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. - 10 years agoHelpfull: Yes(0) No(0)
- these are the prime numbers expressed as a square of each..so missing term is no. 9=> 9*9=81
- 10 years agoHelpfull: Yes(0) No(0)
- 9^2=81
odd numbers
- 10 years agoHelpfull: Yes(0) No(0)
- Ans=81
1*1=1
3*3=9
||ly
9*9=81 - 10 years agoHelpfull: Yes(0) No(0)
- 81(squares of odd numbers )
- 10 years agoHelpfull: Yes(0) No(0)
- 1^2 3^2 like that 9^2=81
- 10 years agoHelpfull: Yes(0) No(0)
- 1*1, 3*3, 5*5, 7*7, 9*9, 11*11
Missing number is 81 - 10 years agoHelpfull: Yes(0) No(0)
- 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 - 10 years agoHelpfull: Yes(0) No(0)
- 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 - 10 years agoHelpfull: Yes(0) No(0)
- 1^2 =1 , 3^2=9 , 5^2=25 ,7^2=49 ,9^2=81 ,11^2=121.
ans is 81 - 10 years agoHelpfull: Yes(0) No(0)
- 1^2 =1
3^2=9
It is square of odd numbers so the answer is 81 (9^2). - 10 years agoHelpfull: Yes(0) No(0)
- next odd number 9 so 9^2=81
- 9 years agoHelpfull: Yes(0) No(0)
- 9=square of odd numbers
- 8 years agoHelpfull: Yes(0) No(0)
- 81 is the answer
- 7 years agoHelpfull: Yes(0) No(0)
- 1^2, 3^2, 5^2,7^2,.....,11^2.= all odd number square so 9^2=81
- 7 years agoHelpfull: Yes(0) No(0)
Maths Other Question