series of numbers

[LalaB]

in a series of even consecutive numbers, 30 is the eleventh smallest number and 28 is the thirteenth largest number. what is the range of the series?

a)12
b)22
C)30
d)42
e)54

[rijul007]

Lets say the series is a,b,c .... , 28, 30, 32, ....

30 is 11th smallest
this implies that 28 is 10th smallest

28 is thirteenth largest


-----(9 nos)---- 28 ----(12 nos)--

range = 9 + 1 + 12 = 22

Option B

[LalaB]

Lets say the series is a,b,c .... , 28, 30, 32, ....

30 is 11th smallest
this implies that 28 is 10th smallest

28 is thirteenth largest


-----(9 nos)---- 28 ----(12 nos)--

range = 9 + 1 + 12 = 22

Option B

u r on a right way, but made a small mistake in ur thinking. please have one more try

[rijul007]

Lets say the series is a,b,c .... , 28, 30, 32, ....

30 is 11th smallest
this implies that 28 is 10th smallest

28 is thirteenth largest


-----(9 nos)---- 28 ----(12 nos)--

range = 9 + 1 + 12 = 22

Option B

u r on a right way, but made a small mistake in ur thinking. please have one more try

Hey,
I still dont see where I am going wrong.
What's the OA?

[Bharath Krishnan]

Hi,

I am getting the answer D- 42

28 is the 13th largest, that makes the last number to be 52

If 30 is the 11th smallest, then 10 is the first number.

Range: 52-10 = 42.

Answer is D

Please give the OA and correct me if I am wrong.

Bharath-

[LalaB]

Lets say the series is a,b,c .... , 28, 30, 32, ....

30 is 11th smallest
this implies that 28 is 10th smallest

28 is thirteenth largest


-----(9 nos)---- 28 ----(12 nos)--

range = 9 + 1 + 12 = 22

Option B

please do not forget, that the range is not the difference of terms, but the difference of numbers

according to ur solution, if we have the series 2 4 6 8 , and 6 is the 3d smallest number and the 2nd largest number, then - 2+1+1=4, but the range is 8-2=6


@Bharath Krishnan, yep, the correct answ is D

[rijul007]

Lets say the series is a,b,c .... , 28, 30, 32, ....

30 is 11th smallest
this implies that 28 is 10th smallest

28 is thirteenth largest


-----(9 nos)---- 28 ----(12 nos)--

range = 9 + 1 + 12 = 22

Option B

please do not forget, that the range is not the difference of terms, but the difference of numbers

according to ur solution, if we have the series 2 4 6 8 , and 6 is the 3d smallest number and the 2nd largest number, then - 2+1+1=4, but the range is 8-2=6


@Bharath Krishnan, yep, the correct answ is D

oh yeah.. thanks for pointing out