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postnew [5]
2 years ago
14

A Mathematics paper consists of 12 questions of which not more than ten are to be answered. Given that the number of candidates

who answer ten questions is equal to the number of candidates who answer nine questions only. Find the probability that a candidate chosen at random from among these two sets of candidates will have selected questions 1, 2 and 3 if all the questions have the same chance of being selected.​
Mathematics
1 answer:
RUDIKE [14]2 years ago
7 0

The probability that a candidate chosen at random from among these two sets of candidates will have selected questions 1, 2 and 3 is 0.4179.

<h3>How to calculate probability?</h3>

The probability that a candidate chosen at random from among these two sets of candidates will have selected questions 1, 2 and 3 will ba calculated thus:

= [(9C6 /12C9) × 1/2] + [(9C7)/12C10) × 1/2]

= 42/220 + 18/66

= 0.1909 + 0.2727

= 0.4179

In conclusion, the probability is 0.4179.

Learn more about probability on:

brainly.com/question/24756209

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Mike makes a commission of 10% on each TV set sold at store. Each TV costs $120. How much
GrogVix [38]

Answer:

$300

Step-by-step explanation:

10% = .1 and each TV costs 120 so .1*120=12 then you take 12*25 since 12 is the money he makes for seeling the tv multiplied by the total TV's sold and you get 300 so Mike makes $300

5 0
3 years ago
A part-time landscaper made $8996.32 last year. if she claimed herself as an exemption for $3650 and had a $5700 standard deduct
Andrej [43]

Answer:

$0

Step-by-step explanation:

A part-time landscaper made $8996.32 last year.

She claimed herself as an exemption for $3650 and had a $5700 standard deduction

Exemption means not subject to taxation.

Deduction means taking some amount of your income for the year, and not have to pay taxes on it.

So, 8996.32-(3650+5700)

=-353.68

Since Her income is lower than the exemption and the standard deduction.

So, her taxable income last year was $0.

Thus Option D is correct.

7 0
4 years ago
Read 2 more answers
I don’t know how to solve these can someone explain ?
mojhsa [17]
The answer is 136 :)
3 0
3 years ago
Read 2 more answers
-5 (e - 1) + 6e = -17
Alex787 [66]

First expand the equation.

-5e+5+6e = -17

Next, combine the like terms.

e+5 = -17

e = -22

5 0
2 years ago
Read 2 more answers
8-1×0+2÷2=? It looks easy, so many different results.
kvasek [131]
You have to use PEMDAS.

8-1*0+2/2 \\  \\ 8-0+2/2 \\  \\ 8-0+1 \\  \\ 8+1 \\  \\ 9
8 0
3 years ago
Read 2 more answers
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