Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Missing No. (Q.No. 11)
Directions to Solve
Insert the missing number.
11.
5, 10, 13, 26, 29, 58, 61, (....)
Answer: Option
Explanation:
Numbers are alternatively multiplied by 2 and increased by 3.
So, the missing number = 61 x 2 = 122.
Discussion:
10 comments Page 1 of 1.
Ajesh said:
1 decade ago
Explanation from my end : Why the answer cant be 114.
Since the alternate numbers difference is 5,3,13,3,29,3 ..
In these diffenences the alternate numbers have differences as 5-13 = 8, 13-29=16, so the next difference can be 24. So 24+29=53.
So 61+53= 114.
Since the alternate numbers difference is 5,3,13,3,29,3 ..
In these diffenences the alternate numbers have differences as 5-13 = 8, 13-29=16, so the next difference can be 24. So 24+29=53.
So 61+53= 114.
Sundar said:
1 decade ago
@Ajesh
I didn't read your explanation fully. Anyway 114 is not provided as one of the option.
You are supposed to tick an option from the given alternatives. In exams, deriving your own answer won't workout man.
Anyway, All the best for keeping your mind sharp. Great future is waiting for you! Have a nice day!!
I didn't read your explanation fully. Anyway 114 is not provided as one of the option.
You are supposed to tick an option from the given alternatives. In exams, deriving your own answer won't workout man.
Anyway, All the best for keeping your mind sharp. Great future is waiting for you! Have a nice day!!
Vasant said:
1 decade ago
(5, 10,) ( 13, 26,) (29, 58,) ( 61,--- )
Simple x2 ; Enjoy :)
Simple x2 ; Enjoy :)
Varsha said:
1 decade ago
Really nice @vasant.
Vignesh said:
1 decade ago
Alternate set (i.e)--> (5,13,29,61) Numbers are multiplied by 2 and increased by 3.
5*2 = 10+3 = 13.
13*2 = 26+3 = 29.
29*2 = 58+3 = 61.
Alternate set (i.e)--> (10,26,58,122) Numbers are multiplied by 2 and increased by 6.
10*2 = 20+6 = 26.
26*2 = 52+6 = 58.
58*2 = 116+6 = 122.
5*2 = 10+3 = 13.
13*2 = 26+3 = 29.
29*2 = 58+3 = 61.
Alternate set (i.e)--> (10,26,58,122) Numbers are multiplied by 2 and increased by 6.
10*2 = 20+6 = 26.
26*2 = 52+6 = 58.
58*2 = 116+6 = 122.
Mohammed said:
7 years ago
After multiple by 2 it was 122 and then we need to add 3 then the answer will be 125?
Am I right?
Am I right?
(3)
Bimal said:
7 years ago
(5,10) = 5 * 2 = 10 (5,10).
(13,26) = 13 * 2 = 26 (13,26).
(29,58) = 29 * 2 = 58 (29,58).
(61,_) = 61 * 2 = 122 (61,122).
(13,26) = 13 * 2 = 26 (13,26).
(29,58) = 29 * 2 = 58 (29,58).
(61,_) = 61 * 2 = 122 (61,122).
(3)
Sai said:
7 years ago
I am not getting, please explain.
(2)
Mohamed Abdul Raseeth said:
4 years ago
Great thinking, Thanks @Ajesh.
Mike said:
3 years ago
You can as well take as two series Numbers.
Group 1: (5, 13,29,61)
So, 5+8=13
13+16=29
29+32=61
Group 2:
(10,26,58,.......)
So, 10+16=26
26+32=58
58+64=122.
And the next number is 122 even when you're multiplying the numbers by x2(+3) in a single series.
Group 1: (5, 13,29,61)
So, 5+8=13
13+16=29
29+32=61
Group 2:
(10,26,58,.......)
So, 10+16=26
26+32=58
58+64=122.
And the next number is 122 even when you're multiplying the numbers by x2(+3) in a single series.
(1)
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