Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 2 (Q.No. 10)
Directions to Solve
Look carefully for the pattern, and then choose which pair of numbers comes next.
10.
75 65 85 55 45 85 35
Answer: Option
Explanation:
This is a simple subtraction series in which a random number, 85, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.
Discussion:
13 comments Page 2 of 2.
Muskan said:
9 years ago
Can't understand, Can you please explain briefly?
PRB said:
8 years ago
Divide the numbers by common factor 5 ( later you can multiply the answer with 5).
So the series becomes- 15,13,17,11,9,17,7_, _.
Now 17( i.e 17 x 5=85 actually) is repeating as 3rd number.
Now consider (15,13).
(11,9) so the difference between first number and second is 2.
So 7, (7-2=5), 17 is the series. Now multiply each by 5 gives 35, 25 ,85.
So the series becomes- 15,13,17,11,9,17,7_, _.
Now 17( i.e 17 x 5=85 actually) is repeating as 3rd number.
Now consider (15,13).
(11,9) so the difference between first number and second is 2.
So 7, (7-2=5), 17 is the series. Now multiply each by 5 gives 35, 25 ,85.
Arav said:
5 years ago
Anyone, please explain the answer clearly.
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