DOS stands

Select the option that is related to third number-cluster in the same way first number cluster is related to second number-cluster.

In the following question, select the related letters from the given alternatives.

LW : OD :: DH: [?]

A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.

KMN, OQR, SUV, WYZ, ____.

How many letters are there in the given series which are immediately followed by a number?

N 8 9 B @ A 7 % 8 N P @ P R N 9 @ B # 7 H 8

Select the option in which the numbers are NOT related in the same way as are the numbers of the following set.

(21, 15, 72)

Select the option that is related to third number-cluster in the same way first number cluster is related to second number-cluster.

Select the option that is related to the third number in the same way as the second number is related to the first number.

54 : 83 :: 67 : ?

Which letter cluster will complete the given series?

LSKR, JOOT, HKSV, FGWX, DCAZ, ______

Fish : Aquarium ::  Birds : ?