Latest CTS Aptitude Question SOLUTION: What will be the next term 3, 7 ,17, 31 ,?

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What will be the next term
3, 7 ,17, 31 ,?

Asked In CTS Anuj Yadav (9 years ago)

Unsolved Read Solution (15)

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Read Solution (15) :

Amrit Kahlon  (9 years ago)

Set of prime nos.
between 3 and 7 5 is missing
between 7 and 17 11 and 13 are missing
between 17 and 31 19 23 and 29 are missing
Hence after 31 4 prime numbers to be left are 37 41 43 47
So the ans is 53.

Is this solution Helpfull? Yes (41) | No   

Vijay Menaria  (9 years ago)

Ans:- 53

b/w 3 and 7 one prime no is missing i.e. 5
similarly,b/w 7 and 17 two prime no is missing i.e.11,13
b/w 17 and 31 three prime no is missing i.e.19,23,29
after 31 four prime no. will miss which are 37, 41, 43, 47
and next no. will be 59

Is this solution Helpfull? Yes (20) | No (7)  

shiv pujan  (9 years ago)

2^1+1=3
2^3-1=7
2^4+1=17
2^5-1=31
2^6+1=65

Is this solution Helpfull? Yes (16) | No (16)  

Saraswathy  (9 years ago)

3------7------17------31------x

----4-----10-------14------y

-------6-------4-------2

So y = 14+2 = 16
x = 31+16 = 47

Ans : 47

Is this solution Helpfull? Yes (4) | No (8)  

brajesh  (9 years ago)

ans:- 59

b/w 3 and 7 one prime no is missing i.e. 5
similarly,b/w 7 and 17 two prime no is missing i.e.11,13
b/w 17 and 31 three prime no is missing i.e.19,23,29
so the no will 4 prime no after 31 i.e.37,41,47,53 then 59

Is this solution Helpfull? Yes (3) | No (8)  

logeswaran  (9 years ago)

ans-55
3,7-4
7,17-10
17,31-14
31,55-24

Is this solution Helpfull? Yes (2) | No (3)  

prasad  (9 years ago)

3+7=10;10+7=17
17+7=24;24+7=31
17+31=48;48+7=55
so ans 55

Is this solution Helpfull? Yes (2) | No   

gunjan  (9 years ago)

55 as 3-7=4
7-17=10
so nextwill be 10+4=14

Is this solution Helpfull? Yes (1) | No   

ABHISHEK KUMAR  (9 years ago)

53....each term is written after ignoring prime numbers in the series of 1,2,3,4

Is this solution Helpfull? Yes | No   

nagarajan  (9 years ago)

3,3+4,7+10,17+14,31+20=51

Is this solution Helpfull? Yes | No   

priyanka  (9 years ago)

first find the difference btw 2 numbers like 3 7 17 31 49
4 10 14 18
4 4 4
0 0

Is this solution Helpfull? Yes | No (3)  

senbagapriya  (9 years ago)

3-7=4
7-17=10
31-17=14
14+10=24
31+24=55
the next number is 55








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Is this solution Helpfull? Yes | No (1)  

PHANI CHAND TEKKEM  (9 years ago)

3,7,17,31
differences are : 4,10,14
this follows difference sequence like: 4,10,(10+4), (14+10)
so 31+28= 59

Is this solution Helpfull? Yes | No   

Vishal Chopra  (7 years ago)

B Is the ans.

Is this solution Helpfull? Yes | No   

sanober noor  (6 years ago)

2*1+1=3
3*2+1=7
4*4+1=17
5*6+1=31
6*8+1=49
......

Is this solution Helpfull? Yes | No (2)  

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