Verbal Reasoning - Mental Ability Questions

X's rank was 12 from the to. If the total number of students in the class was 16, then X's rank from the bottom of the class is

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Abettor

In a certain code language, @ represents '+', ⊕represents '-', α represents '+'and 'θ' represents 'X '. Find out the answer of the following question.

107 θ 3 ⊕ 64 α 8 ⊕ 2θ9=?

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

HPU, BJO, VDI, PXC, ?

Select the missing number from the given options?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

ab_bc_bb_ _abb_c

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
LOP, MPQ, NQR, ORS, ?

From the given alternative words, select the word which cannot be formed using the letters of the given word:

ELABORATE