In each of the following questions, there is a certain relationship between two given letter pairs on one side of (::) and pair is given on another side of (::) where another pair is to be found from the given alternatives, having the same relationship with this pair as the pairs of the given pair bear. Choose the best alternative. AE : EI :: IO : ?
OU
All the letters used are vowels, taken in their order A, E, I, O, U.
AE → EI: A becomes E (next vowel) and E becomes I (next vowel).
Apply the same rule to IO:
I → next vowel = O
O → next vowel = U
IO → OU
Check: OS and OA break the vowel order, and IU leaves I unchanged, so OU is the pair that keeps the relation.
Hence, OU.
Select the option that is related to the fifth letter-number cluster in the same way as the second letter-number cluster is related to the first letter-number cluster and fourth letter-number cluster is related to third letter-number cluster.
(NOTE: Operations should be performed on the whole numbers, without breaking down the number into its constituent digits. E.g.13 - Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
SB760 : PY530 :: AR1040 : XO810 :: FK840 : ?
Select the option which is related to the fifth term in the same way as the second term is related to the first term and the fourth term is related to the third term.
IGEC : DFHJ : : USQO : PRTV : : NLJH : ?
Directions: Choose the related word from the given alternatives
Ignition : ? :: Valve : Trumpet
If 31 : 52 = 4836 and 18 : 4 = 216, then what is the value of 51 : 27?
Two figures given on the left side of (::) are related with some logic/rule/relation. Select the missing figure on the right side of (::) from the given alternatives based on the same logic/rule/relation.

Two figures given on the left side of (::) are related with some logic/rule/relation. Select the missing figure on the right side of (::) from the given alternatives based on the same logic/rule/relation.

Directions: Pick the correct options from the given alternatives
GERMAN :NAMREG :: INDONESIA :?
Directions: Select the related letter from the given alternatives
RATS: STAR :: YXALG : ?
Two figures given on the left side of (::) are related with some logic/rule/relation. Select the missing figure on the right side of (::) from the given alternatives based on the same logic/rule/relation.

Two figures given on the left side of (::) are related with some logic/rule/relation. Select the missing figure on the right side of (::) from the given alternatives based on the same logic/rule/relation.

Select the option that is related to the third term in the same way as the second term is related to the first term.
Day: Night :: Morning : ?Select the option that is related to the third term in the same way as the second term is related to the first term.
India : Country :: Delhi : ..........Select the option that is related to the third term in the same way as the second term is related to the first term.
MATE: NATE :: FATE: ?Select the option that is related to the third term in the same way as the second term is related to the first term.
13 : 196 :: 9 : .......
Select the related word pair from the given alternatives. Afghanistan : Kabul :: ....... : .........