Which of the following nutrient element acts as energy

193. 69 + 200.09 – 512.96 + 312.09 =?

567-4824 ÷ 134 =? × 9

18, 25, 33, 42, 52, 63, ?

√256 × 25 – 15 × 14 =?

1/6+ 999*53/54  ×9  = ?

Simplify the following expression:

    (525 +175) ² - (525 – 175) ² / (525 × 175)

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

1960 ÷ 8 + 975 ÷ 5 = ?² - 89

25% of 12% of 1600 + 112 = ? × 4 

60 % of 250 + √169 * 7 = ?² + 45 % of 160

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

(44 × 72 ÷ 6) ÷ 11 = (9² + ?) ÷ 3