Question

K= [xix is a day of the week
starting
with the letter
letter j​

Answer 1

Answer:

K = { } or ϕ

Step-by-step explanation:

We have,

K = {x : x is a day of the week starting with the letter j}

Now,

We know that,

There are no days of the week that starts with j.

So,

K is an empty set and can be denoted by ϕ and read as "phi"

Thus,

K = { } or ϕ

Hope it helped and believing you understood it........All the best