two coins are tossed

list all the possible outcomes

what is the probability that both of the coins land heads-up?

t,t

t,h
h,h
h,t

1/4

Sally has a total of 100 coins after she plays a game .she plays 10times how many coins does she have

When two coins are tossed, there are four possible outcomes:

1. Coin 1: Heads, Coin 2: Heads
2. Coin 1: Heads, Coin 2: Tails
3. Coin 1: Tails, Coin 2: Heads
4. Coin 1: Tails, Coin 2: Tails

So, the possible outcomes are: HH, HT, TH, and TT.

To find the probability that both coins land heads-up, we need to determine the number of favorable outcomes (HH) and divide it by the number of possible outcomes.

Number of favorable outcomes = 1 (HH)
Number of possible outcomes = 4 (HH, HT, TH, and TT)

Probability = Number of favorable outcomes / Number of possible outcomes
Probability = 1 / 4
Probability = 0.25 or 25%

To list all the possible outcomes when two coins are tossed, we need to consider the possible outcomes for each individual coin and then combine them.

Let's assume that the first coin is labeled as "Coin 1" and the second coin is labeled as "Coin 2." Each coin has two possible outcomes: heads (H) or tails (T). So, when we toss both coins, we can consider the possible outcomes for each coin as follows:

Coin 1: H, T
Coin 2: H, T

To determine all the possible outcomes when both coins are tossed, we need to combine the outcomes for each individual coin. We can do this by pairing each outcome of Coin 1 with each outcome of Coin 2:

Possible outcomes: HH, HT, TH, TT

Now, let's calculate the probability that both of the coins land heads-up.

The probability of an event happening is calculated by dividing the number of favorable outcomes by the number of possible outcomes. In this case, we are interested in the probability of both coins landing heads-up, which is only one out of the four possible outcomes.

Probability of both coins landing heads-up = Number of favorable outcomes / Number of possible outcomes
= 1 / 4
= 0.25 (or 25%)

Therefore, the probability that both coins land heads-up is 0.25 or 25%.