Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Find Wrong No. (Q.No. 4)
Directions to Solve
Find out the wrong number in the series.
4.
445, 221, 109, 46, 25, 11, 4
Answer: Option
Explanation:
Go on subtracting 3 and dividing the result by 2 to obtain the next number.
Clearly, 46 is wrong.
Discussion:
23 comments Page 3 of 3.
Kamali said:
6 years ago
It could be cracked easily when solved from right to left.
Multiplying 2 and adding 3 to the multiplied result.
(4*2)+3 = 11.
(11*2)+3 = 25.
(25*2)+3 = 53.
(53*2)+3 = 109.
(109*2)+3 = 221.
(221*2)+3 = 445.
So, 46 is the wrong answer.
Multiplying 2 and adding 3 to the multiplied result.
(4*2)+3 = 11.
(11*2)+3 = 25.
(25*2)+3 = 53.
(53*2)+3 = 109.
(109*2)+3 = 221.
(221*2)+3 = 445.
So, 46 is the wrong answer.
(4)
Harshita said:
5 years ago
@Dhara.
Your way of solving the question is wrong because then the given series is proved wrong.
4+7=11.
11+14=25,
25+21=46,
46+28=74,
74+35=109,
109+42=251.
Hence the given solution is correct.
Your way of solving the question is wrong because then the given series is proved wrong.
4+7=11.
11+14=25,
25+21=46,
46+28=74,
74+35=109,
109+42=251.
Hence the given solution is correct.
(6)
Kartik said:
5 years ago
11 is the only one which is prime no. So the answer is option D.
(1)
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