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
25 15
25 85
35 25
85 35
25 75
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 1 of 2.

Vijay said:   8 years ago
75 65 85 55 45 85 35.

75-65=10,
55-45=10 And here 85 is common after 2 numbers,
35-25=10
Ans:25 85.
(11)

Sowmya said:   7 years ago
The series goes like -10, +20, -30, -10, +40, -50, -10, +60.
(5)

Richa said:   1 decade ago
75-10=65
65-10=55
55-10=45
45-10=35
35-10=25

So answer 25 85.
(2)

Bash.. said:   1 decade ago
Select 75, 65, 85.

55, 45, 85.

Know select 75-55=20.

65-45=20.

So we get 20.

Then.

Sub 20 from 55-20=35.

45-20=25.

Here 85 is common.

Answer is 35, 25, 85.
(1)

Dharani said:   6 months ago
Super, Thanks all for explaining it.
(1)

Rajib Das said:   1 decade ago
c3 is not fixed. it is an error. b3=? and c3=?

Rajib Das said:   1 decade ago
75, 65, 85, 55, 45, 85, 35, ....., What numbers should be next?
Ans:
a1 b1 c1 a2 b2 c2 a3 b3 C=fixed
75 65 85 55 45 85 35 (?) (?)
a1-a2=75-55=20 b1-b2=65-45=20 c1-c2=85-85=00
a2-a3=55-35=20 So,b2-b3=20=45-25* So, c2-c3=00=85-85*

Parul said:   1 decade ago
75,65,85,55,45,85,35,..

See:

75-65=10 and after this 85.
55-45=10 and after this 85.
Therefore,35-25=10.
Hence answer is (35 25 85).

After two no. with difference of 10 there is 85.

RENU NEGI said:   9 years ago
They are very helpful.

Aditya vamsi said:   9 years ago
10is subtracted from every consequent number and 85 takes the third place.

Then, we get the answer 25 85.


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