TCS
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Verbal Ability
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Find the missing term in the following series: 5, 3, 12, 7, 26, 15, ?
a) 54
b) 27
c) 108
d) 31
e) None of these
Read Solution (Total 12)
-
- there are two patterns in this puzzle
one is 5,5*2+2,12*2+2
other one is 3,3*2+1,7*2+1,
so as by first pattern the answer is 26*2+2=54 - 11 years agoHelpfull: Yes(17) No(0)
- 54
5*2+2=12
12*2+2=26
26*2+2=54 - 11 years agoHelpfull: Yes(4) No(1)
- this is a combination of two series 1st is 5,12,26,.. and 2nd 3,7,15... at ? place now when look carefully now it is turn of first series outcome it is like 5+7=12, 12+14=26, 26+21=47 so ans(47)here none of these.
- 11 years agoHelpfull: Yes(4) No(0)
- there are 2 ways of it with 2 answers
first: 5*2+2=12
12*2+2=26
26*2+2=54
second: 12-5=7
26-12=14
47-26=21 such that the difference comes to be the multiple of 7.
similarly the other pattern also follow the same with a difference of multiple of 4. - 11 years agoHelpfull: Yes(3) No(1)
- 5*2+2=12
3*2+1=7
26*2+2=54 - 11 years agoHelpfull: Yes(2) No(1)
- 5*2=10+2=12
12*2=24+2=26
26*2=52+2=54 - 11 years agoHelpfull: Yes(2) No(2)
- consider altrnt terms 5,5*2+2,12*2+2,26*2+2..
so 54 - 11 years agoHelpfull: Yes(1) No(1)
- multiply odd terms difference with 2 and add to the previous odd term
- 11 years agoHelpfull: Yes(0) No(0)
- alternate series
5,12,26,54=(*2+2)=logic
3,7,15logic(*2+1) - 11 years agoHelpfull: Yes(0) No(0)
- 5,12,26,x are 1 series,(12-5)=7;(26-12)=14;(x-26)=28 ,so x=54
3,7,15,... are 1 series
- 11 years agoHelpfull: Yes(0) No(0)
- Odd Position is 5,5*2+2,12*2+2...
So ans is 54..26*2+2=54... - 11 years agoHelpfull: Yes(0) No(0)
- 54 is my answer
because (5*2)+1=12
(12*2)+2=26
(26*2)=54 - 5 years agoHelpfull: Yes(0) No(0)
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