Which of the following pairs is correctly

(7² × 5² + 1555 )/(79+60) = 2000 ÷ ?

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

{12² + (66/4) + (252/8)} ÷ 8 = (?)^1/2

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

?% of 2480 + 15 × 34 = 1440

√3970 × √730- √2400 =?

Simplify the following questions and choose the correct option.

(84 × 3) ÷ 7 + (64 ÷ 8 × 5) − 19 = ?

414 ÷ 23 × 38 – 154 + 264 = ?

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

15% of 1800 + 2² = ? 

390/? = √256 + 3.5