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Vlada [557]
3 years ago
15

In a class of 100 students 45 students read physics, 52 students read Chemistry and 15 students read both the subject. Find the

number of people who student who study neither physics nor chemistry ​
Mathematics
2 answers:
Nikitich [7]3 years ago
7 0

Answer:

12

Step-by-step explanation:

First,

Add 45+52+15

Then the answer will be 112

Then -(minus) from 100

erik [133]3 years ago
6 0

Answer:

18 students

Step-by-step explanation:

45 - 15 = 30 students only read physics

52 - 15 = 37 students only read chemistry

15 students read both

add all of them:

30 + 37 + 15 = 82

subtract the sum from 100

100 - 82 = 18

18 students doesn't study neither

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Answer:

A perfect square is a whole number that is the square of another whole number.

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Now, "a perfect square ends with the same two digits".

This can be really trivial.

For example, if we take the number 10, and we square it, we will have:

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The last two digits of 100 are zeros, so it ends with the same two digits.

Now, if now we take:

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10,000 is also a perfect square, and the two last digits are zeros again.

So we can see a pattern here, we can go forever with this:

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So we can find infinite perfect squares that end with the same two digits.

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