Margo places 6 pennies and 4 nickels in a jar. For the experiment, she selects a penny, replaces it, and selects another penny. If Margo repeats the experiment 100 times, how many times can she expect to select two pennies?

We will see that Margo can expect to randomly select two pennies 36 times.

The probability of selecting a penny at random is equal to the quotient between the number of pennies in the jar and the total number of coins in the jar, this is:

p = 6/10

And doing that two times, needs that probability two times, so the probability of selecting two pennies is:

p = (6/10)*(6/10) = 36/100

Here we just need to multiply the above probability by 100, we will get:

(36/100)*100 = 36

So she can expect to get two pennies 36 times.

If you want to learn more about probability, you can read:

link

She is expected to select 2 pennies 36 times.

Step-by-step explanation:

In jar , we have

6 pennies and 4 nickels

Total coins = 10

The probability of getting two pennies ( with replacement) =

If Margo repeats the experiment 100 times, then expected number of times to select two pennies =

She is expected to select 2 pennies 36 times.

1010: 3030

is it i think