Which of the following is false?

55 ÷ 11 × 6 + ?² = 47 × 2

(630 ÷ 18 + 24 of 25) ÷ 5 = ?

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

320 + 16² – 55% of 720 = 5 * ?²

280 ÷ 14 + 11 × 12 – 15 × 6 = ? 

1404 ÷ 26 x 3 + 7 = ?²

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

(5/8) × 1600 + (2400 ÷ 25) = ? 

525 ÷ 21 x 28 – 853 + 264 = ?

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

44% of (750 - 350) + ?% of 540 = √625 X 20

12/15 of 13/60 of 7/39 of 90603 = ?

(3984 ÷ 24) x (5862 ÷ 40) = ?