Question

ARE the sets A=(b,c,d,e)and B=(x : x is a letter in the world 'MASTER')joint ?

Answer 1

A = {b,c,d,e}B = {x:xis a letter in the word `MASTER′}

∴B={m,a,s,t,e,r}

The element 'e' is common in both the sets A and B.

Hence set A and set B are joint sets.

Hope It Helps :)

Answer 2

Refer the Attachment

Hope it helps uh mate..!!