Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 4 (Q.No. 12)
Directions to Solve
Find the number that fits somewhere into the middle of the series. Some of the items involve both numbers and letters
12.
Look at this series: 4, 7, 25, 10, __, 20, 16, 19, ... What number should fill the blank?
Answer: Option
Explanation:
Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.
Discussion:
27 comments Page 2 of 3.
Aayan sharma said:
1 decade ago
Here in the 1st set we see that (4, 7, 25) and in the second set we see that (10, -, 20).
In the first we see that 4 + 3 is 7 and 25 - 5 we get 20. So 10 should be added with 3 to get answer 13.
In the first we see that 4 + 3 is 7 and 25 - 5 we get 20. So 10 should be added with 3 to get answer 13.
Rhytham patel said:
1 decade ago
Not understanding still, explain with other example.
Pons said:
10 years ago
Every third number is subtracted by 5 i.e 25, 20, -.
And others a follow the pattern of adding 3 with the consecutive numbers, i.e 4, 7, 10, 13, 16, 19-.
And others a follow the pattern of adding 3 with the consecutive numbers, i.e 4, 7, 10, 13, 16, 19-.
M.Mareeswari said:
10 years ago
4 7 25 10 ____ 20 16 19.
4 + 3 = 7.
7 + 3 = 10.
10 + 3 = 13.
13 + 3 = 16.
16 + 3 = 19.
The number is added 3. Every third number is different pattern so the correct answer is 13.
4 + 3 = 7.
7 + 3 = 10.
10 + 3 = 13.
13 + 3 = 16.
16 + 3 = 19.
The number is added 3. Every third number is different pattern so the correct answer is 13.
Uday raj said:
10 years ago
4, 7, 25 are the main series n next alternative number is 10 i.e. came by adding 4+3 is 7 and 7+3 is 10 and after 10+3 is 13 after than 25 is taken as last no of main series and we have to less 5 from every last no of main series. Then 25-5 is 20 finally the series is 3, 7, 25, 10, 13, 20, 16, 19, 15.
Sidhant Shrivastava said:
9 years ago
Q = 4, 7, 25, 10, ?, 20, 16, 19.
Solution:
Firstly for the first portion i.e.
=> 4, 7, 10, ?, 16, 19.
=> The pattern is 1+3=4, 4+3=7, 7+3=10, 10+3=13, 13+3=16, 16+3=19.
While 25 and 20 are following the different pattern i.e. every 3rd number is subtracted by 5 and so on.
Solution:
Firstly for the first portion i.e.
=> 4, 7, 10, ?, 16, 19.
=> The pattern is 1+3=4, 4+3=7, 7+3=10, 10+3=13, 13+3=16, 16+3=19.
While 25 and 20 are following the different pattern i.e. every 3rd number is subtracted by 5 and so on.
(2)
Vairamuthu said:
9 years ago
4 + 6 = 10,
10 + 6 = 16,
25 - 5 = 20,
20 - 5 = 15,
7 + 6 = 13,
13 + 6 = 19.
10 + 6 = 16,
25 - 5 = 20,
20 - 5 = 15,
7 + 6 = 13,
13 + 6 = 19.
(2)
KadAM said:
9 years ago
1st series 4 7 10 13 16 19.
2nd series 25 20 15 10.
So, the answer is 13.
2nd series 25 20 15 10.
So, the answer is 13.
(4)
Sanjeev said:
8 years ago
What is the next number of 4, 3, 4, 7, 15?
Solve it.
Solve it.
RSGHU said:
8 years ago
I didn't understand it. Anyone, can explain me the series?
(1)
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