Zero is a rational number as it can be represented as \(\frac{0}{1}\) or \(\frac{0}{2}\) or \(\frac{0}{3}\) etc.
The largest $ n \in \mathbb{N} $ such that $ 3^n $ divides 50! is:
(i) The kind of person the doctor is (money, possessions)
(ii) The kind of person he wants to be (appearance, ambition)
∆ABC is an isosceles triangle in which AB = AC. Side BA is produced to D such that AD = AB (see Fig. 7.34). Show that ∠ BCD is a right angle.
