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 1 of 3.
Kamali said:
5 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.
(2)
Nagendramurthy said:
1 decade ago
Let me explain ..
445-3=442
442/2=221
221-3=218
218/2=109
109-3=106
106/2=53
53-3=50
50/2=25
25-3=22
22/2=11
11-3=8
8/2=4
So after 109 it should be 53.. in the given series it is 46 so
Have a nice day..!
445-3=442
442/2=221
221-3=218
218/2=109
109-3=106
106/2=53
53-3=50
50/2=25
25-3=22
22/2=11
11-3=8
8/2=4
So after 109 it should be 53.. in the given series it is 46 so
Have a nice day..!
Harshita said:
4 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.
(4)
Kamlesh said:
7 years ago
The general form of the series is sigmal of GI (n\2) -1 put n=445 you will get 222.5 but GI of 222.5 is 222 subtract 1 from it you will get 221 and then put 221 on the series and so on.
Apoorv said:
8 years ago
Sum every digit of every number in the series.
4 5 1 1 7 2 4. There's anyhow increase and decrease in the difference of number. Except 1 at the 4th place. Which corresponds to 46!
4 5 1 1 7 2 4. There's anyhow increase and decrease in the difference of number. Except 1 at the 4th place. Which corresponds to 46!
Satya said:
1 decade ago
I had solved this problem like this.
Starting from the end.
4.
4+7=11,
11+14=25,
25+21=46,
46+28=74. So 109 is wrong.
Can anybody say whether the way is correct are not? and why?
Starting from the end.
4.
4+7=11,
11+14=25,
25+21=46,
46+28=74. So 109 is wrong.
Can anybody say whether the way is correct are not? and why?
Dhara said:
5 years ago
4.
I solved the question in this way.
4+7 = 11,
11+14 = 25,
25+21 = 46,
46+28 = 74.
So, 109 should be wrong.
I am right, Can anyone tell me?
I solved the question in this way.
4+7 = 11,
11+14 = 25,
25+21 = 46,
46+28 = 74.
So, 109 should be wrong.
I am right, Can anyone tell me?
(1)
Priyanka said:
1 decade ago
4*2+3=11
11*2+3=25
25*2+3=53 ------------ 46 which is an wrong series.
53*2+3=109
109*2+3=221
221*2+3=445
You might can understand this.
11*2+3=25
25*2+3=53 ------------ 46 which is an wrong series.
53*2+3=109
109*2+3=221
221*2+3=445
You might can understand this.
BoB said:
10 years ago
Hi but how did you find that it must be subtracted by 3 and multied by 2, seeing the question ? can any one help please.
Lakshu said:
7 years ago
We can simply do that:
445-221 = 224
224/2 = 112
221-109=112
112/2 = 56
109-46 = 63, So 46 is the wrong answer.
445-221 = 224
224/2 = 112
221-109=112
112/2 = 56
109-46 = 63, So 46 is the wrong answer.
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