What value will come in place of the question mark (?) in the following questions.
Expression : $(562.5 \times 6)^{6}\div(135 \div 9)^{10}$ $\div(37.5 \times 6)^{7}=(3.75 \times 4)^{?-6}$
=> $(3375)^6 \div (15)^{10} \div (225)^7 = (15)^{x - 6}$
=> $((15)^3)^6 \div (15)^{10} \div ((15)^2)^7 = (15)^{x - 6}$
=> $(15)^{18} \times \frac{1}{(15)^{10}} \times \frac{1}{(15)^{14}} = (15)^{x - 6}$
=> $(15)^{18 - 10 - 14} = (15)^{x - 6}$
=> $(15)^{-6} = (15)^{x - 6}$
Comparing both sides, we get :
=> $x - 6 = -6$
=> $x = 6 - 6 = 0$
1. If a + b + c = 9 and ab + bc + ca = 18, then what is the value of $a^{3}+b^{3}+c^{3}-3abc$ ?
2. If 5 - 2x ≥ 4 - x and 3(2 - x) > 2 - 4x; then x can take which of the following values?
4. If n is a three-digit number and n2 = ___34. How many values for n are possible?
5. The sum of interior angles of a regular polygon is $1440^{0}$. The number of sides of the polygon is