Direction: What value will come in place of the question mark (?) in the following question?

8, 17, 53, ?, 1079, 6479

The digit in unit’s place of the product 81 × 82 × 83 × ... × 89 is

What should come in place of the question mark (?) in the following mathematical statement?
$${{?^6÷16=108}}$$

$$ 11^{2}-4096^{1\over 4}+100^{1\over2}=?$$

Directions : The pie graph indicates the break-up of the cost of construction of a house. Assuming that the total cost of construction is Rs 6,00,000, answer the following questions. 

The amount spent on labor exceeds the amount spent on supervision by :  

The sum of length, breadth and height of a cuboid is 20 cm. If the length of the diagonal is 12 cm, then find the total surface area of cuboid.

A dealer marks a washing machine for ₹7500, and allows a discount of 6% on it. Find the selling price 

10 years ago, respective ratio of the age of mother and daughter was 4 : 1. 10 years later, the respective ratio of the age of mother and daughter will become 2 : 1. At present, what is the sum of their age?