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 3 of 3.
Neethu said:
1 decade ago
Here there are two series of which first series consists of 4,7,10,...,16,19.here if we observe every number is incrementing with three. so the answer is 13(10+3) and the second series is 25 and 20.
Wally said:
1 decade ago
Please anyone tell how can we do for (10, _, 20). Please reply.
Kailash Malav said:
1 decade ago
We obtain second number to add first no+3 =second number then we finding the different number (third no that's25)now forth number +3=Fifth no(i.e 13) then we finding the 20i.e 3rd no-5=20 So we can find the all series every no .it's combination of two series .
(1)
Koushik said:
1 decade ago
The series is taken as 3 numbers as one group i.e. like.
(4, 7, 25) and
(10, _, 20) , .
Observing the first set 4 is added by three to get 7 like that we should add 3 to the 10 to get the answer in the second set.
(4, 7, 25) and
(10, _, 20) , .
Observing the first set 4 is added by three to get 7 like that we should add 3 to the 10 to get the answer in the second set.
(1)
Amit Chauhan said:
1 decade ago
Answer Not Clear Please some one make it clear to understand!
(1)
Sathishporayi said:
2 decades ago
Example
(4,7,25) 1st set
(10,_,20) 2nd set
in this see 1st set
4 is added with 3 get 7
25 is subtract with 5 get 20, 20 is 2nd set of 1ast no.
like that 10 is add with 3 get final answer 3
(4,7,25) 1st set
(10,_,20) 2nd set
in this see 1st set
4 is added with 3 get 7
25 is subtract with 5 get 20, 20 is 2nd set of 1ast no.
like that 10 is add with 3 get final answer 3
(2)
Sanju said:
2 decades ago
Please tell me how everystep in this qus doing?
(1)
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