The apparatus used in the refrigeration is

What will come in place of the question mark (?) in the following expression?

25% of 2000 – 50% of 500 = 100% of ?

Simplify: (2³×3²) ÷6

What will come in the place of question mark (?) in the given expression?

?% of (112 X 3 + 164) + 75 = 2 X 140 + 35

648 ÷ 36 × 49 – 1012 + 847 = ?

5 + 2 × 3 ÷ (3 × 2) ÷ 4

(20% of 15% of 600 – 6) × 5 + 84 = ?² 

25 × 5 - ?% of 150 = 10² - 2

{5% of (20 × 25) + 6% of (30 ×35)} ÷ 11 = ? 

What value should come in the place of (?) in the following questions?

√(60 + 8² + 101) * 5 = ?