Verbal Reasoning - Mental Ability Questions

If '÷' stands for subtraction,'-' stands for addition,'x' stands for division and '+' stands for multiplication, then which one of the following equation is correct?

If "÷" denotes "multiplied by", "+" denotes "subtracted from", "–" denotes "added to" and "x" denotes "divided by", then which of the following equation is true?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
ZYX, VUT, QPO, MLK, HGF, ?

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

80 x 16 ÷ 4 + 2 - 8 = ?

In a certain code language, “TALCS” is written as “UENCV”. How is “SPARK” written in that code language?

If code P is denoted by 7, X by 9, M by 5, Z by 8, L by 2, T by 1, then ZLTPXM will be

Arrange the given words in the sequence in which they occur in the dictionary.
1. Counter
2. Crop
3. Create
4. Carnation
5. Creator

Select the related word/letters/number from the given alternatives. AIDS : VIRUS : : MALARIA : ?