Select the related letters/word/number from the given

(-251 × 21 × -12) ÷ ? = 158.13

(3/7) x 868 + 25% of 240 = (? + 65)

Simplify the following expressions and choose the correct option.

(3/4 of 256) + (2/5 of 150) - (7² ÷ 7)

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

[(7/8 of 256) ÷ 4] + (3/5 of 150) = ?

(34.88% of 699.79) + 40.030 × 17.88 of 11.86 + 16.21 =? + (7.22)²

84% of 800 + 70% of 640 = 14 × ?

Simplify the following expression:

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

25% of 240 + √? = (2/3) × 120

(2/?)  x  (3/16)  x  (2/15)  x  60 = 1/3  

11 × 25 + 12 × 15 + 14 × 20 + 15 = ?