# Python while loop exercises for CBSE Computer Science

## Python while loop exercises for CBSE Computer Science

### 1- Python program to print First 10 Even numbers using while loop

```num = 2
while(num<=20):
print(num)
num = num + 2
```

Output:

```2
4
6
8
10
12
14
16
18
20```

### 2- Python program to print First 10 Odd numbers using while loop

```num = 1
while(num<=20):
print(num)
num = num + 2
```

Output:

```1
3
5
7
9
11
13
15
17
19```

### 3- Python program to print First 10 Natural numbers using while loop

```num = 1
while(num<=10):
print(num)
num = num + 1
```

Output:

```1
2
3
4
5
6
7
8
9
10```

### 4- Python program to print First 10 Whole numbers using while loop

```num = 0
while(num<10):
print(num)
num = num + 1
```
Output:
```0
1
2
3
4
5
6
7
8
9```

### 5-Python program to print first 5 numbers and their cubes using while loop.

```num = 1
print("Numbers\t Cube")
while(num<=5):
print(num,"\t", num ** 3)
num = num + 1
```

Output:

```Numbers Cube
1         1
2         8
3         27
4         64
5         125```

### 6- Python program to print a series of (10, 20, 30, 40, 50) using while loop.

```num = 10
while (num <= 50) :
print(num, end = " , \n")
num = num +10
```

Output:
```10 , 20 , 30 , 40 , 50 ,

```

### 7- Python program to print sum of first 10 Natural numbers using while loop.

```num = 10
sum = 0
while num >= 1:
sum = sum + num
num= num - 1
print(sum)
```

Output:

`55`

### 8- Python program to print sum of first 10 even numbers using while loop.

```num = 2
sum = 0
while num <= 20:
sum = sum + num
num= num + 2
print(sum)
```

Output:
`110`

### 9- Python program to print table of a given number using while loop.

```i = 1
num = int(input("Enter any number  : "))
while i <= 10:
print(num," * ",i," = ", num * i)
i = i+1
```

Output:

```Enter any number : 5
5 * 1 = 5
5 * 2 = 10
5 * 3 = 15
5 * 4 = 20
5 * 5 = 25
5 * 6 = 30
5 * 7 = 35
5 * 8 = 40
5 * 9 = 45
5 * 10 = 50```

### 10- Python program to check weather  the inputted number is prime or not using while loop.

```num1 = int(input("Enter any number : "))
k=0
if num1 == 0 or num1 == 1:
print("Not a prime number ")
else:
i = 2
while(i<num1):
if num1 % i == 0:
k = k+1
i = i+1
if k == 0 :
print( num1,"is prime number")
else:
print(num1, "is not prime number")
```

Output:

```Enter any number : 6
6 is not prime number
>>>``` #### By cbsepython

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