On 1st August which of the following days is celebrated?

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

65% of 900 - 45% of 600 = ? X 3 

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

? = (20 × 62 – 34² )

240 + 25% of 420 – 145 =? + (2.5 + 8.5) ²

(11/12) × (18/22) × (4/3) + 3 = ?²

16 × 14 + 30 × 21 = 14 × ?

Simplify the following expression:

(16⁴-1)/17×15× (2⁸+1)

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

? = 60% of 48% of (20 × 350) + 180

15(2/9) + 11(2/9) + 17(1/9) + 13(4/9) = ?

The value of [(3√2+2) × (3√2-2)] of 13 + 15 is: