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densk [106]
2 years ago
6

In a school annual Day 60 students involved is Science Exhibition, 75 involved in Mathematics Exhibition, 20 involved in both Ex

hibitions, and the rest of 285 students are not involved in any exhibition. Illustrate the above information in a Venn- diagrom. How many students took part in Schools Annual Day? How many of them involved in only one exhibition ?​
Mathematics
2 answers:
just olya [345]2 years ago
5 0

Answer:

1) See the explanation

2) 400 Students

3) 95 Students

Step-by-step explanation:

1) As can be known from the question

Then, draw the venn diagram according to the known conditions.

2) 60 + 75 - 20 = 115 { Draw a venn diagram to calculate }

115 + 285 = 400

3) 60 - 20 + 75 - 20 = 95 ( Draw a venn diagram to calculate }

pshichka [43]2 years ago
3 0

Answer:

440 man its so easy just add up all the numbers

Step-by-step explanation:

440

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If a computer network has 60 switching nodes, in how many ways can 2 or 3 nodes fail?___________
notka56 [123]

Answer:

There are 35990 ways in which 2 or 3 nodes fail

Step-by-step explanation:

Given : A computer network has 60 switching nodes.

To Find : In how many ways can 2 or 3 nodes fail?

Solution:

We are supposed to find no. of ways can 2 or 3 nodes fail.

So, we will use combination here .

No. of ways can 2 or 3 nodes fail=^{60}{C_2 +^{60}C_3

Formula : ^nC_r =\frac{n!}{r!(n-r)!}

No. of ways can 2 or 3 nodes fail=\frac{60!}{2!(60-2)!}+\frac{60!}{3!(60-3)!}

                                                       =35990

Hence there are 35990 ways in which 2 or 3 nodes fail

5 0
3 years ago
A fruit seller marks up all fruit he sells by 25% above the whole sale price he pay to the farmer. Write an equation that you co
Irina18 [472]

Answer:

x = 1.25y

Step By Step

whole sale price = x

selling price = y

since the whole sale price is 25% (0.25) more than the selling price,

x=y+y0.25, or x=1.25y

edit: pls consider giving me the Brainliest if this helped you thank you! ;)

6 0
2 years ago
The answer it’s from acellus
jok3333 [9.3K]

Answer and Step-by-step explanation:

4 goes into 17 four times.

4x4= 16

giving you

16 R1

3 0
3 years ago
Read 2 more answers
-8 - something = 3<br>I need help​
nydimaria [60]

Answer:

-8 - -11 = 3

Step-by-step explanation:

-8-x=3\\\\-8-x-3=3-3\\\\-11-x=0\\\\-11-x+x=0+x\\\\-11=x

Therefore, the missing number is -11

4 0
1 year ago
The measured length is 3cm. The actual length is 3.4<br> cm. Find the percent error
Komok [63]

Answer:

I think it is 100

Step-by-step explanation:

7 0
3 years ago
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