Who among the following is the Youngest President of

17.6% of 250 + √? = 70% of 90

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

25% of 1600 – 15² = ? × 5

18 + 28 ÷ 4 - 14 = ? - 35

Determine the value (6.375)² - (3.125)² 

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

30% of 160 – 25% of 240 + 4³ = ?

38² + 48² + 57² = ? - (81 x 49)

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.

42 * 7 * 64 * 11 * 6 *4

15% of 1800 + 2² = ? 

(392 + 427 + 226 – 325) ÷ (441 + 128 – 425) = ?