Calculate basic probability by entering the number of outcomes that satisfy the requirement, and total possible outcomes.

### Simple example: a coin toss

In a coin toss, you have to choose between head or tails, so there is one outcome which can be head or tails, and two possible outcomes.

Formula:Probability =either head or tails mean one option two possible outcomes =

= 0.5 or 50%1 2 So the possibility in a coin toss is 50%

### Other Example:

Suppose we have a bag of wafers with different forms, 3 of them in a triangle form, 2 in a star form, and 5 in a heart form.

▴ ▴ ▴ ★ ★ ♥ ♥ ♥ ♥ ♥what is the probability of pulling a triangle?

Probability of triangle =▴ ▴ ▴ ▴ ▴ ▴ ★ ★ ♥ ♥ ♥ ♥ ♥ =

= 0.3 or 30%3 10 what is the probability of pulling a star?

Probability of star =★ ★ ▴ ▴ ▴ ★ ★ ♥ ♥ ♥ ♥ ♥ =

= 0.2 or 20%2 10 what is the probability of pulling a heart?

Probability of star =♥ ♥ ♥ ♥ ♥ ▴ ▴ ▴ ★ ★ ♥ ♥ ♥ ♥ ♥ =

= 0.5 or 50%5 10