Verbal Reasoning - Mental Ability Questions

If 80&10 = -8, 50&2 = -25 and 80&16 = -5, then find the value of 20&5 = ?

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

?, ONM, GFE, XWV

Which of the following interchanges in signs and numbers will make the given equation correct?
8 x 6 + 4 = 52

In a row of students, if John , who is 16th from the left, and Johnson, who is 8th from the right, interchange their positions, John becomes 33rd from left. How many students are there in a row?

 In a certain code language, “POLIS” is written as “SROLV”. How is “MRUGS” written in that code language?

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

? , 9, 19, 39, 79

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
60 x 5 + 3 ÷ 24 - 6 = ?

If MACHINE is coded as 19-7-9-14-15-20-11, how will you code DANGER?