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Kay [80]
3 years ago
6

Which number has only two factors? Why? a)21 b)23 c)25 d)27

Mathematics
2 answers:
Sladkaya [172]3 years ago
7 0
Answer: B) 23

The number that only has 2 factors is a prime number with its two factors being 1 and the number itself. The only prime number shown here is 23.
vagabundo [1.1K]3 years ago
4 0

Answer:

I believe the answer would 25 hope this helps

Step-by-step explanation:

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A blood bank needs 8 people to help with a blood drive. 11 people have volunteered.
11111nata11111 [884]

Answer:

165

Step-by-step explanation:

formula is

nCr = n!/(r!(n−r)!)

r= 8 = number of choosing objects from the set

n = 11 = total number of objects in the set

C(n,r)=C(11,8)

=11!/(8!(11−8)!)

! means factorial

factorial means to multiply by decreasing positive numbers.

For example, 8! = 8 ∗ 7 ∗ 6 ∗ 5 ∗ 4 ∗ 3 ∗ 2 ∗ 1 = 40320

=11!/8!×3!

= 165

massedu

5 0
2 years ago
Read 2 more answers
Three men and eight women are waiting to be interviewed for jobs. If they are all selected in random​ order, find the probabilit
irakobra [83]

The probability that all men will be interviewed first is; 1/55

<h3>How to find probability combination?</h3>

To solve this question we will make use of the probability combination formula which is;

nCr = n!/(r! * (n - r)!)

Thus, since we want to find the probability that all men will be interviewed first, then we will use the formula;

3(3!)/((11C1) * (10C1) * (9C1)) = 18/990

Simplifying that fraction  gives us; 1/55

Read more about Probability Combination at; brainly.com/question/4658834

#SPJ1

7 0
2 years ago
What is 3x+5 = 2x+11
boyakko [2]
Answer: x = 6

1. Subtract “2x” on both sides. This simplifies the equation to x+5=11

2. Subtract “5” on both sides. This simplifies to x=6, which is your answer.
4 0
3 years ago
An article is bought for Rs200 &amp; sold for Rs250,what is the profit percentage.​
Yuki888 [10]

(200/250)×100 = 80%

100 - 80 = 20%

<em>hope </em><em>it </em><em>helps</em><em>.</em><em>.</em><em>.</em><em>!</em><em>!</em><em>! </em>

4 0
2 years ago
Read 2 more answers
Please help!!!!!!!!!
nadya68 [22]

Step-by-step explanation:

0.002

ones is 0

tenths is 0

hundreths is 0

thousandths is 2

7 0
3 years ago
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