Find the smallest digit to be put in the place of the

If (x + 1/x) = 5, then value of x³ + 1/x³ is:

181/8 + 51/4 – 63/8 = ? + 9/2

40% are the passing marks. A student gets 250 marks yet fails by 38 marks. What is the maximum marks?

40.5 ÷ [4/5 of (32 + 18) - 29/2] = ? ÷ 102

20% of 10% of 900 + 84/12 = ?²

24² + 18 × 8 – ? = 356

84% of 800 + 70% of 640 = 14 × ?

[(120)² ÷24 ×25] ÷ 250 =?

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

25% of 2000 – 50% of 500 = 100% of ?