Angela has the following coins in her pocket:
10p 1p 50p 2p 20p
She pulls out two coins at random.
a) How many different combinations of pairs of coins are the
b)
List all of the combinations,
write your answers like this: (10p, 1p)
You must write all of your answers on one line.

        (10p, 1p), (10p, 50p), (10p, 2p), (10p, 20p), (1p, 50p), (1p, 2p),

        (1p, 20p), (50p, 2p), (50p, 20p), (2p, 20p)

Explanation:

The possible combinations are:

1. Assuming the first coin is 10p:

2. Asuming the first coin is 1p

Do not count (1p, 10p) as it is the same combination as (10p, 1p)

3. Assuming the first coin is 50p:

Do not count (50p, 10p) nor (50p, 1p) as they are the same combinations (10p, 50p) and (1p, 50p) counted earlier:

4. Assuming the first coin is 2p:

The only new combination is:

5. All the combinations with 20p have already been listed.

Therefore:

        (10p, 1p), (10p, 50p), (10p, 2p), (10p, 20p), (1p, 50p), (1p, 2p),

        (1p, 20p), (50p, 2p), (50p, 20p), (2p, 20p)

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.

idk

step-by-step explanation: