Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 2 (Q.No. 8)
Directions to Solve
Look carefully for the pattern, and then choose which pair of numbers comes next.
8.
6 20 8 14 10 8 12
Answer: Option
Explanation:
This is an alternating addition and subtraction series. In the first pattern, 2 is added to each number to arrive at the next; in the alternate pattern, 6 is subtracted from each number to arrive at the next.
Discussion:
63 comments Page 2 of 7.
Muneera said:
4 years ago
Thanks for your nice explanation @Nithya.
(1)
Ritik said:
4 years ago
Thanks for the better explanation @Nithya.
Ashish Adhikari said:
4 years ago
Each element in the even position is the resultant of a multiple of 2 starting from 3 i.e 2*3=6, 2*4=8, 2*5=10, 2*6=12, so at position 8, 2*7=14.
Each element in the odd position is also the result of multiples of 2 starting from 10 with a decrement of 3 each time i.e. 2*10=20, 2*7=14, 2*4=8 so now at position 7, we need to decrement 4 by 3 i.e 4-3=1 and multiply with 2 i.e. 2*1=2.
So our answer is 2,14
Each element in the odd position is also the result of multiples of 2 starting from 10 with a decrement of 3 each time i.e. 2*10=20, 2*7=14, 2*4=8 so now at position 7, we need to decrement 4 by 3 i.e 4-3=1 and multiply with 2 i.e. 2*1=2.
So our answer is 2,14
(16)
Kaviya said:
4 years ago
Thank you for explaining @Nithya.
(1)
Ruchi said:
5 years ago
Thanks @Nithya.
(1)
Karan said:
5 years ago
Thank you @Nithya.
Vishnu said:
5 years ago
Thanks for explaining @Sandy.
Hitu�\'� said:
6 years ago
Thank @Nishs.
Mayur said:
6 years ago
Thanks @Nisha.
Sandy said:
7 years ago
The logic is;
6, 8, 10, 12, 14. Is in even positions. Add +2.
20, 14, 8, 2. Is in odd positions. So, Sub-6.
6, 8, 10, 12, 14. Is in even positions. Add +2.
20, 14, 8, 2. Is in odd positions. So, Sub-6.
(1)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers