Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Pick Wrong No. (Q.No. 3)
Directions to Solve
Find out the wrong number in the given sequence of numbers.
3.
8, 13, 21, 32, 47, 63, 83
Answer: Option
Explanation:
Go on adding 5, 8, 11, 14, 17, 20.
So, the number 47 is wrong and must be replaced by 46.
Discussion:
38 comments Page 3 of 4.
Subash said:
1 decade ago
Add 5 to 1st number.
Then add (5+3) to the next number.
Then add (5+3+3) to the next number.
Then add (5+3+3+3) to the next number and so on.
So 47 is wrong it must be replaced by 46.
Then add (5+3) to the next number.
Then add (5+3+3) to the next number.
Then add (5+3+3+3) to the next number and so on.
So 47 is wrong it must be replaced by 46.
Raghava said:
1 decade ago
Its very simple yaar. Difference betweenn 8 & 13 is 5, 13 & 21 is 8, 21 & 32 is 11. Add 3 numbers for all. Numbers you've to add is 5, 8, 11, 14, 17. 20. Got it?
Divya said:
1 decade ago
Sorry I cant get this. Someone help how we got 14 to add.
Abhijeet said:
1 decade ago
The "difference between 47 and 63" is not 17 as stated. "Its 16"
Sanjay said:
1 decade ago
I cant get this can you give better explanation.
Sindhu said:
1 decade ago
See friends,
Difference between 8 & 13 is 5.ie if v subtract 13-8 v get 5
Difference between 13 & 21 is 8.ie if v subtract 21-13 v get 8(5+3)
Difference between 21 &32 is 11.ie if v subtract 32-21 v get 11(8+3)
Likewise difference between 32 & 47 is 15.ie if v subtract 47-32 v get 15 But it doesnt satify the condition 11+3=14..hence 47 is wrong no..
Difference between 8 & 13 is 5.ie if v subtract 13-8 v get 5
Difference between 8 & 13 is 5.ie if v subtract 13-8 v get 5
Difference between 13 & 21 is 8.ie if v subtract 21-13 v get 8(5+3)
Difference between 21 &32 is 11.ie if v subtract 32-21 v get 11(8+3)
Likewise difference between 32 & 47 is 15.ie if v subtract 47-32 v get 15 But it doesnt satify the condition 11+3=14..hence 47 is wrong no..
Difference between 8 & 13 is 5.ie if v subtract 13-8 v get 5
Sudheer said:
1 decade ago
STEP1......8+5=13;
2......13+5+3=21;
3......21+5+3+3=32;
4......32+5+3+3+3=46 here in the series it is 47
5......46+5+3+3+3+3=63;
6......63+5+3+3+3+3+3=83; so 47 is wrong
2......13+5+3=21;
3......21+5+3+3=32;
4......32+5+3+3+3=46 here in the series it is 47
5......46+5+3+3+3+3=63;
6......63+5+3+3+3+3+3=83; so 47 is wrong
Sks said:
1 decade ago
Sudheer is right. Thank you, sudheer.
Sonutalwani said:
1 decade ago
8+5=13 (5)
13+8=21 (5+3)
21+11=32 (5+6)
32+14=46 (5+9)
46+17=63 (5+12)
63+20=83 (5+15)
13+8=21 (5+3)
21+11=32 (5+6)
32+14=46 (5+9)
46+17=63 (5+12)
63+20=83 (5+15)
Ankit said:
1 decade ago
I don't get it guys. Someone help please.
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