State whether the following statement is true or false:

$\{a,b\}=\{a,a,b,b,a\}$

Question 101

State whether the statement is True or False.

$a-b=b-a$

Question 99

State whether the statement is True or False.

$a\times b=b\times a$

Question 61

In the following question, state whether the statement is True (T) or False (F):

$(a+b)(a-b)=a^2-b^2$