Among the following famous personalities, whose

17.6% of 250 + √? = 70% of 90

13% of 200 + 56 ÷ 4 = 8% of ? 

360 ÷ 9 + 15 % of 200 + ? * 10 = 45 * √25

Ravi is 12 years younger than Surya. Ravi's age is 40% of the sum of his and Surya's age. What will be Surya's age 9 years hence? 

[490 of 7 - (13)² of 5] - 1228 = ?

(5832) ^2/3 / (104976)^3/4 X ? = ( `sqrt(18)` ` ` ) ⁵

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

25% of 2000 – 50% of 500 = 100% of ?

32² – 18² + 11 × 24 = ?