1. Write a python program using nested loops that display the output below

0

0 1

0 1 2

0 1 2 3

0 1 2 3 4

2. Write a python program using nested loops that display the output below

0 1 2 3 4

0 1 2 3

0 1 2

0 1

0

3. Write a python program using LOOP (WHILE or FOR) to display all prime numbers from 1 to n.