Assignment-1
a)find out the commands starting with ab
b)list out the commands starting with a

Assignment-2
Look-up the documentation of round and see how to use it

Assignment-3
Check the output of
a)round(2.48)
b)round(2.48, 1)
c)round(2.484)
d)round(2.484, 2)

Assignemt-4
Type round(2.484 and press Enter.Then cancel the command using Ctrl + C. Type the command,round(2.484, 2)