Which of the following represents the sample space for flipping two coins?

A
{HH, TT}

B
{H, T}

C
{HH, HT, TH, TT}

D
{HH, HT, TT}

Step-by-step explanation:

Sample Space  of any event E is the set of all possible outcomes whenever  that event takes place.

Here, event E : Tossing 2 coins

Now, as we know, when an unbiased coin is tossed,

The total outcomes  = {Head, Tail}

So, when two coins are flipped, the total outcomes are  2 x 2  = 4.

Sample space   =  { Head Head, Head Tail, Tail Head, Tail Tail}

or, S  = { HH, HT , TH, TT}

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.