Latest Infosys Aptitude Question SOLUTION: Q. What is the next number in the series 3,32,405,?

• Placement Papers
• /
• Infosys
• /
• Numerical Ability
• /
• Arithmetic

Infosys Question Papers: Infosys Interview Experience(10) INFOSYS Company Profile

(#M40030861) INFOSYS Numerical Ability question maths Keep an EYE

Q. What is the next number in the series

3,32,405,?

Asked In Infosys agash (10 years ago)

Unsolved Read Solution (10)

Is this Puzzle helpful?   (44)   (17) Submit Your Solution Arithmetic

Read Solution (10) :

RAKESH  (10 years ago)

3= 3*(1^2)
32= 4*(2^3)
405= 5*(3^4)
so next is
6*(4^5)=6144

Is this solution Helpfull? Yes (112) | No (1)  

shubham  (10 years ago)

3= 3*(1^2)
32= 4*(2^3)
405= 5*(3^4)
6*(4^5)=6144

Is this solution Helpfull? Yes (5) | No   

Devarla Satheesh Kumar  (10 years ago)

3,
(2,3) 32
(4,5) 405
(6,7)617

Is this solution Helpfull? Yes (3) | No (13)  

murthy dvms  (10 years ago)

i think..ans is 1536
3= 3*(1^2)
32= 4*(2^3)
405= 5*(3^4)
therefore following the sequence.. 6*(4^4))= 1536

Is this solution Helpfull? Yes (2) | No (24)  

K.ARun  (10 years ago)

@Ravi: Sorry 120-40=80;

Is this solution Helpfull? Yes (2) | No (5)  

Kirthi Raman  (10 years ago)

3 is 2nd prime
32 is 2nd prime + 10th prime
405 is 2nd prime + 10th prime +74th prime
So the pattern in 2,10,74 (for 2nd, 10th, 74th prime) is as follows
2, 2+8, 2+8+8^2 and the next is 2+8+8^2+8^3=586 and 586th prime is 4271
Now add 4271 to 405 to get 4676 as the correct answer.

Is this solution Helpfull? Yes (1) | No (4)  

Sandeep Negi  (10 years ago)

next term is 1122 by using gauss difference method

Is this solution Helpfull? Yes | No (4)  

sai pavan  (10 years ago)

plz explain the gauss diff method
@Sandeep Negi
Tq in adv

Is this solution Helpfull? Yes | No   

RISHABH GUPTA  (8 years ago)

3*1^2 = 3
4*2^3 = 32
5*3^4 = 405
6*4^5 = 6144

Is this solution Helpfull? Yes | No (2)  

Ashwani Kumar Maurya  (7 years ago)

((1^2)*3)=3, ((2^3)*4)=32, ((3^4)*5)=405, ((4^5)*6)=6144
so,
Answer: 6144

Is this solution Helpfull? Yes | No (1)  

Please Login to Read Solution.