Along a yard $225 \ m$ long,$26$ trees are planted at equal distances,with one tree at each end of the yard. What is the distance between two consecutive trees in meters?

The value of $\frac{9^{2} \times 18^{4}}{3^{16}}$ is

What should come in place of the question mark $(?)$ in the following equation?
$\sqrt{575} \div ? \times 14.98^{2} = 450$

The correct expression of $5 . \overline{45}$ in the fractional form is

$A$ man completes $\frac{2}{15}$ of his journey by aeroplane,$\frac{2}{5}$ by train and the rest by taxi. What part of his journey does he complete by taxi?

What approximate value will come in place of the question mark $(?)$ in the given equation? (You are not expected to calculate the exact value)
$24.98^{2} \times \frac{16.02^{2}}{(7.98 \times 15.04)} \times 38.93 = 130 \times ?^{2}$