Find the ratio between the number of children visiting

What is (0.08% of 0.008% of 8)^1/9 ?

9 × 4 ^? ÷ 16 = 144

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

(√676 of √144 ÷ 13) of 2400% = ? 

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

(16 × 22 + 23) ÷ 15 + 24 = ?² – 16 × 2

36% of 640 – 12.5% of 352 + 25% of 640 = ? – 48% of 432

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

133 ÷ 19 X √576 + ? ÷ 2 = 32 X 7.5

?² + 114 - 48 ÷ 2 × 5 = 163

139 + 323 – √169 + ? = 450

Simplify the expression and find the value of 'x'

35% of 500 of 18 ÷ 21 = x

(√1024 + √324)% of 780 = ?% of 260