Verbal Reasoning - Mental Ability Questions

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

45 x 5 - 24 + 3 ÷ 80 = ?

In the following question, select the number which can be placed at the sign of ? from the given alternatives.

In the following question, select the related letters from the given alternatives.
AGN : IOV : : BLM : ?

A General of an Army wants to create a formation of square from 36562 army men. After arrangement, he found some army men remained unused. Then the number of such army men remained unused was

P and Q are brothers. P is the father of S. R is the only son of Q and is married to U. How is U related to S?

In the following question, select the related number from the given alternatives.
ACOUSTIC : 91 : : RENOUNCE : ?

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

15, 32, 99, 400, ?

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, ?