Verbal Reasoning - Mental Ability Questions

If 9 * 2 * 5 = 23 and 1 * 4 * 8 = 29, then 1 * 6 * 3 = ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
C11, V17, O23, ?

If UNCOVER is coded as FMXLEVI, then how will TIP be coded as?

The  following  questions  consist  of two  words  that  have  a  certain  relationship  to each   other,   followed   by   four   alternatives. Select  the  best  alternative  that  has  same relationship as the original pair of words

Crèche : Infants

In the following question, select the related letters from the given alternatives.
YONEX : DUUMG : : JASPO : ?

In a certain code language, "OCEAN" is written as "PEHES". How is "RIVER" written in that code language?

A gets more marks than B but less than C. D gets less marks than E but more than A. If C gets less than D then who amongst A, B, C, D, E gets the highest marks?

In the following question, by using which mathematical operator will the expression become correct?
18 ? 6 ? 9 ? 27