Select the most appropriate meaning of the word  which is opposite to the one marked in bold letters according the context in which it has been used.

At his success in the examination he felt elated .

By interchanging the given two numbers (not digits), which of the following equations will be correct?

24 and 9

Select the correct combination of mathematical signs that can sequentially replace the ‘*’ signs and balance the given equation.

(19 % 3) * 11 = 2 and 9 * 3 % 2 = 5. Then, 8 % 4 * 2 = ?

If '+' means '–', '–' means '×', '÷' means '+' and '×' means '÷', then ' 30 – 12 + 20 × 10 ÷ 10 ' = (?)

If '÷' means '+', '+' mean '-', 'x' means '÷' and '-' means 'x', then what will be the value of the given expression:

12 – 6 x 2 + 5 ÷ 9

Select the correct combination of the mathematical signs to replace the ‘@’ symbols in the below equation and thereby balance it:

If “+” means “minus”, “×” means “divided by”, “÷” means “plus”, and “-“ means then “multiplied by”