Which statement is true regarding Frequency

If 38 @ 9 = 66 and 63 @ 43 = 122, then 29 @ 57 = '?'.

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

25: 175 :: 38:?

Prince : 06 :: Mother : ?

Select the related word/letters/number from the given alternatives.

4 : 5 :: 9 : ?

Select the number combination of letters that when placed sequentially in the blanks of the given series will complete the series.

Cobbler : Leather: : Weaver : ?

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

Dog : Bark :: Bird : ?