# CBSE Class 11-Mathematics: Questions: Permutation Exercise 2

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**Question 1:**

Evaluate

(i)

(ii)

**Question 2:**

Is

**Question 3:**

Compute

**Question 4:**

Calculate if

**Question 5:**

Evaluate,

when

(i)

(ii)

**Solution 1**

We know that

So, solving the below questions based on that

(i)

(ii) First calculate the factorials

Then

**Solution 2**

We know that factorials are given by

So, solving the below questions based on that

So, it is clear that

**Solution 3**

**Solution 4:**

Cancelling On both the sides

Solving this

**Solution 5:**

When

(i)

(ii)