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kotegsom [21]
3 years ago
13

Suppose you are to select a password of size 4. The first character should be any lowercase letter or a digit, while the second

should be a non-zero digit. The third should be any lower case letter, and the fourth should be any lowercase letter, which is different from the third. b. Consider a group of ten students, and six of them are boys. A committee of 3 students is expected to select from the above group. How many committees can you select with at least two girls
Mathematics
1 answer:
Goshia [24]3 years ago
3 0

First question seems incomplete :

Answer:

40 ways

Step-by-step explanation:

Question B:

Number of boys = 6

Number of girls = 4

Number of people in committee = 3

Number of ways of selecting committee with atleast 2 girls :

We either have :

(2 girls 1 boy) or (3girls 0 boy)

(4C2 * 6C1) + (4C3 * 6C0)

nCr = n! ÷ (n-r)!r!

4C2 = 4! ÷ 2!2! = 6

6C1 = 6! ÷ 5!1! = 6

4C3 = 4! ÷ 1!3! = 4

6C0 = 6! ÷ 6!0! = 1

(6 * 6) + (4 * 1)

36 + 4

= 40 ways

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Greeley [361]
<h3><u>Answer</u> :</h3>

\sf \dashrightarrow \dfrac{22}{7} \div \dfrac{22}{7}

\sf \dashrightarrow \dfrac{22}{7} \times \dfrac{7}{22}

\sf \dashrightarrow \dfrac{\cancel{22}}{\cancel{7}} \times \dfrac{\cancel{7}}{\cancel{22}}

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<h3>Hence, answer is 1.</h3>
4 0
3 years ago
Read 2 more answers
Susan makes 5 fruit cups for the picnic. In each cup, she has 5 strawberries and 3 kiwi. Joanna uses the same number of total fr
vaieri [72.5K]

Answer:

Susan makes 5 fruit cups

each fruit cup has 5 strawberries and 3 kiwis

so the number of strawberries used is - 5 x 5 = 25 strawberries

and the number of kiwis used - 5 x 3 = 15 kiwis

so the total number of fruits - 25 + 15 = 40 fruits

Joanna uses 40 fruits to make 4 fruit cups

each cup she uses 8 strawberries

therefore total number of strawberries she uses - 8x 4 = 32 strawberries

she has 40 fruits in total and 32 of those are strawberries

the rest are kiwis

number of kiwis = 40 -32 = 8

8 kiwis are there and she has to make 4 cups

so for each cup number of kiwis = 8 / 4 = 2

so each cup has 2 kiwis

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
An advertising agency notices that approximately 1 in 50 potential buyers of a product sees a given magazine ad, and 1 in 8 sees
zheka24 [161]

Answer:

Probability = 0.12025

Step-by-step explanation:

P (Am) = 1/50 = 0.02       {Magazine ad}

P (At) = 1/8 = 0.125         {Television ad}

P (Am ∩ At ) = 1/100 = 0.01      {Both ads}

P (Am U At) = P (Am) + P (At) - P (Am ∩ At )

= 0.02 + 0.125 - 0.01

P (Am U At)  = 0.135       {Person sees either ad}

P (Am' ∩ At') = 1 - P (Am U At)

P (Am' ∩ At')  = 1 - 0.135 = 0.865      {Person sees none ad}

Prob (Purchase) = Prob (Purchase with ad) + Prob (purchase without ad)

P (P/ A) = 1/4 = 0.25 , P (P / A') = 1/10 = 0.1

P (P) = (0.25) (0.135) + (0.1) (0.865)

= 0.03375 + 0.0865

0.12025

7 0
3 years ago
Thirty-nine percent means the same as _____.
ad-work [718]
39% has the same value as .39
7 0
3 years ago
Read 2 more answers
Using a famous spokesperson to promote a certain product is an example of_
butalik [34]

Answer:

An advertisement.

Step-by-step explanation:

It's called a Celebrity Endorsement but it's a subgroup of an Advert.

6 0
3 years ago
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