Question : Directions: If ‘+’ means ‘–’, ‘–’ means ‘×’, ‘×’ means ‘÷’, ‘÷’ means ‘+’, then what will come in place of the question mark (?) in the following equation?

124 × 4 ÷ 13 – 3 + 36 = ?

Option 1: 31

Option 2: 34

Option 3: 45

Option 4: 42

Question : Solve the following equation.
12³ × (16² − 14² − 40) ÷ 2 − 9⁴ = ________.

Option 1: 17280

Option 2: 6561

Option 3: 10719

Option 4: 9865

Question : Directions: If + means −, − means ×, × means ÷, and ÷ means +, what will be the value of the following expression?
20 ÷ 2 + 4 – 8 × 4 = ?

Option 1: 14

Option 2: 10

Option 3: 8

Option 4: 4

Question : Directions: If A denotes ‘+’, B denotes ‘×’, C denotes ‘−’, and D denotes ‘÷’, then what will come in place of ‘?’ in the following equation?

145 A 27 D 3 B ? = 163

Option 1: 1

Option 2: 2

Option 3: 3

Option 4: 6

Question : Find the value of $a$ in the following equation. (Given $a<10 $)
$\frac{(187 \div 17 \times a-3 \times 3)}{\left(8^2-9 \times 7+a^2\right)}=1$

Option 1: 2

Option 2: 1

Option 3: 4

Option 4: 3