Question

A={ allprimes less then 10}
B={ all whole numbers less then 10
then A-B​

Answer 1

Answer:

prime number less than 10 is{1, 3,5, 7}

Answer 2

Given :

A = { All primes less than 10 }

B = { All whole numbers less than 10 }

To find :

A - B

Solution :

A = { All primes less than 10 }

First of all what is prime numbers !!!

~ Prime numbers are the numbers which have a factor of " 1 " and " itself "

Note :

The number " 1 " is neither prime number not Composite number.

So here

A = { 2 , 3 , 5 , 7 }

B = { All whole numbers less than 10 }

What are Whole numbers !!!

~ The whole numbers start from 0 till the infinity.

B = { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 }

Now A - B = ?

A - B refers that the elements in A must not be present in the set B

A - B = { 2 , 3 , 5 , 7 } - { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 }

→ A-B = { 4 }