Verbal Reasoning - Mental Ability Questions

In a certain code language, '-' represents '+', '+' represents 'x', 'x' represents '÷' and '÷' represents '-'. Find out the answer to the following question.

13 ÷ 18 - 5 + 10 x 2 = ?

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

EF, GI, IL, KO, ?

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

GLN, HNQ, IPT, JRW, ?

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

GLP, HNR, IPT, JRV, ?

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

S_RTR_ST_T_S

The weights of 4 boxes are 10, 40, 50 and 80 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

Find the missing number from the given alternatives?

Select the odd word/letters/number/number pair from the given alternatives.