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Logical Reasoning
Number Series
which term of the series 27,24,21,18,15,....is the first neagtive term
option
1) 9
2) 7
3) 16
4) 11
5) 15
6) 14
7) 10
8) 13
9) 12
10) 8
Read Solution (Total 30)
-
- 1st -ve term of the series is (-3).
from the A.P series formula,
tn=a+(n-1)d
put tn=-3; a=27;d=-3
the solution is n=11(ans.) - 8 years agoHelpfull: Yes(20) No(3)
- 3
Becoz 27-3=24
24-3=21
21-3=18
18-3=15
15-3=12 - 8 years agoHelpfull: Yes(4) No(2)
- These numbers are in the series 27,24,21,18,15,12,9,6,3,1,-1......... the first negative term starts in the place of 10
- 8 years agoHelpfull: Yes(4) No(1)
- 11th term is the first -ve term which is -3.
- 8 years agoHelpfull: Yes(4) No(0)
- 3*9=27
3*88=24
.
.
.
3*5=15
so 3*4=12
so 12 is the answer - 8 years agoHelpfull: Yes(3) No(4)
- 9 . difference is 3
- 8 years agoHelpfull: Yes(2) No(1)
- Any idea when aspire for the selected candidates(2nd march) is gonna start and when we will get the joining letter...???
- 8 years agoHelpfull: Yes(1) No(2)
- Option 9. Since 9*3=27,8*3=24,•••4*3=12
- 8 years agoHelpfull: Yes(1) No(1)
- 28-3=25
25=25-3=21
Like that
15 -3=12
Finally answer is 12 - 8 years agoHelpfull: Yes(1) No(1)
- it is an AP or you can say a table of 3 but in reverse order so if you see there are 10 terms till the number gets 0 and after that we get negative terms
So First negative will be 11 term - 8 years agoHelpfull: Yes(1) No(0)
- a=25,d=-3 and find n=?
let nth term=0
then
0=a+(n-1)d
0=25+(n-)-3
we have to solve and we get value of n is10.
10th term is 0 and 1st -ve value in 10+1 term.
so Ans is 11. - 8 years agoHelpfull: Yes(1) No(0)
- option (9) ans is 12.
- 8 years agoHelpfull: Yes(1) No(0)
- Here all the numbers are in difference of 3, but 16 is first number which is not.
- 8 years agoHelpfull: Yes(0) No(2)
- 11. every time there is a decrement of 3.in this logic it should be 11
- 8 years agoHelpfull: Yes(0) No(1)
- 12,9 multipule with 3
- 8 years agoHelpfull: Yes(0) No(0)
- 27-24=3 , 18-15=3
- 8 years agoHelpfull: Yes(0) No(0)
- 12
as all numbers are decreasing multiple of 3 - 8 years agoHelpfull: Yes(0) No(0)
- 11,given series is in ap with d = -3 so first term is-3
- 8 years agoHelpfull: Yes(0) No(0)
- 12
every time he can minuses 3 - 8 years agoHelpfull: Yes(0) No(0)
- 9) 12
18-6=12
- 8 years agoHelpfull: Yes(0) No(1)
- we should do -3 for evry term so at last we get 12
- 8 years agoHelpfull: Yes(0) No(1)
- 12+3=15
15+3=18......
24+4=27 - 8 years agoHelpfull: Yes(0) No(0)
- 11
as the sries is the table of 3 & 27,26,24,21,18,15,12,9,6,3,0,-1 - 8 years agoHelpfull: Yes(0) No(0)
- ans is 12
3*9,3*8,3*7,3*6,3*5,3*4 - 8 years agoHelpfull: Yes(0) No(0)
- i think .. in this series the difference is 3 and the 1st -ve number is -3... 27,24,21,18,15,12,9,6,3,0,-3 that is the series and -3 is the 11th term so the ans is 4) 11
- 8 years agoHelpfull: Yes(0) No(0)
- -3=27+(n-1)(-3)
so n=11 - 8 years agoHelpfull: Yes(0) No(0)
- ans is 12.
because defference is 3 - 8 years agoHelpfull: Yes(0) No(0)
- 12 BASED ON SERIES 6 DIFFERENCE IS THERE
- 8 years agoHelpfull: Yes(0) No(0)
- Here all are factors of 3 only then here missing one is 12
- 8 years agoHelpfull: Yes(0) No(0)
- answer is 12, because the series is 3 multiples in descending order
- 8 years agoHelpfull: Yes(0) No(0)
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