50 cents
50 cents.
50c
To find the number of combinations to get 2 coins from a selection of one 50c, one 20c, and one 10c coin, we can consider the possible pairs. The combinations are: (50c, 20c), (50c, 10c), and (20c, 10c). Therefore, there are a total of 3 combinations.
No, it is not.
16 $0.50 coins
A First Day Cover on the official Teddy Roosevelt envelope is worth about $7 or $8 depending on condition. If it's just a stamp on a plain cover, then it's worth about .50c. The stamp is worth .20 used of envelope.
50c
Liquid.
It really depends on where it is (Antarctica or Florida)
You need to specify what type of experiment you are asking about.
-50c typically refers to a temperature of -50 degrees Celsius, while C on its own is usually used as an abbreviation for Celsius.