Question Discussion & Solution

Concept:

Polymorphism is a feature of OOPs that allows the object to behave differently in different conditions. 

Explanation:

In C++ we have two types of polymorphism:
1. Compile-time Polymorphism – This is also known as static (or early) binding.
2. Runtime Polymorphism – This is also known as dynamic (or late) binding.

Compile-time Polymorphism
Function overloading and Operator overloading are examples of Compile time polymorphism.

CONCEPT:

• Power: The rate of work done is called power.
  • It is denoted by P.
  • Mathematically it is written as

\(Power\;\left( P \right) = \frac{{\;W}}{{t}}\)

CALCULATION:

Given - mass of 1^st person (m₁) = 80 kg, mass of 2^nd person (m2) = 60 kg, time (t₁) = 12 sec, and time (t2) = 11 sec​

• The power to take an object to a certain height in 12 sec by 1^st person is 

\(\Rightarrow P_1 = \frac{mgh}{t}=\frac{80gh}{12}\)       ----(1)

• The power to take an object to a certain height in 11 sec by 2^nd person is 

\(\Rightarrow P_1 = \frac{mgh}{t}=\frac{60gh}{11}\)       ----(2)

On dividing equations 1 and 2, we get

\(\Rightarrow \frac{P_1}{P_2} =\frac{\frac{80gh}{12}}{\frac{60gh}{11}}=\frac{11}{9}\)

Given code language:

'nee muk pic' means 'grave and concern';
'ill dic so' means 'every body else'; and
'tur muk so' means 'body and soul'.

So we can decode the following words:

muk - and

so' - body

'tur - soul

Proceeding ahead accordingly, the code for 'every' is either 'ill' or 'dic' and the code for 'concern' is either 'nee' or 'pic'.

Key Points

A binary tree is a tree data structure in which each node has at most two child nodes.

The number of subtrees of a node is called the degree of the node. In a binary tree, all nodes have degrees o, 1, and 2. 

The degree of a tree is the maximum degree of a node in the tree. A binary tree is of degree 2. The number of nodes of degree 2 in Tis "n-1".

Hence the correct answer is n-1.

If '+' means 'divide by', '-' means 'add to', '×' means 'subtract from' and '/' means 'multiply by',

{(16 × 6) - (2 / 3)} + (3 - 1)] / 2

Now put the right symbol we get-

= [{(16 - 6) + (2 × 3)} / (3 + 1)] × 2

Now we apply BODMAS rule-

= [{10 + 6} / 4] × 2

= [16 / 4] × 2

= 4 × 2

= 8

Hence, "8" is the correct answer.