Question

write roster and set builder of primes less than 20​

Answer 1

Answer:

Let A be the set of even natural numbers less than 11.

In roster form we write A = {2, 4, 6, 8, 10}

(ii) A = {x : x is an integer and- 1≤  x < 5}

In roster form we write A = {-1, 0,1, 2, 3, 4}

Step-by-step explanation:

plzz brainliest

Answer 2

Step-by-step explanation:

Set builder form- { x:x<20 and x is a prime numbers }

Rooster form- {2,3,5,7,11,13,17,19}

hope it helps ✌