Parts of the following sentence are given as options.

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

?² = 3945 ÷ 5 + 774 ÷ 6 – 77 

125% of 80 – 6 × 4 = ? × 13 – 54

Simplify the expression:

(9x² - 25) / (3x + 5)

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

√16 * ? = √144 + (18 * 4 ÷ 3)

[∛(91125/19683  )- ∛(3375/5832  )  ]  ×  ∛(512/9261)  = ? - √(484/3969)

{(700 ÷ 20) × 40} – 30 × 18 = ?% of 1000

(96% of 1100) + 92 × 4 = ? + 46 × 16

464 + 181 +? = (154 × 25) - (15) ²  

19 × ? = 361 ÷ 19