Four little quizzes about science history, physics, medicine, biology, astronomy, mathematics, etc.

20 questions. No time limit.

Take the Quiz-A

Take the Quiz-B

Take the Quiz-C

Take the Quiz-D

Exercise your brain !

Four little quizzes about science history, physics, medicine, biology, astronomy, mathematics, etc.

20 questions. No time limit.

Take the Quiz-A

Take the Quiz-B

Take the Quiz-C

Take the Quiz-D

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8 thoughts on “Scientific Knowledge Quizzes”

In the Quiz C I think there could be a mistake or maybe I missunderstoood the question:

If p is the probability of falling in (2,4) and q the probability of falling in (1,3,5), then the probability of falling in 6 is:=)

my answer is p*q

your answer is 1- (p*q)

my reasoning is: you have 6 options .. the probability of getting 6 is 1/6 right

p=2/6 and q=3/6—-: p*q= 1/6, maybe I miss something here

Hello,

Your reasoning is correct if you think about a concrete dice with equiprobabilty.

In scientific terms, the correct answer is 1 – (p + q) because the sum of probabilities for all possible evenements is 1 (i.e. 100 %).

I changed the answers to avoid ambiguities.

Thanks for your help,

Admin

this refers to the « Operator-B-Aptitude-Test ». Sorry, but i couldn´t find out, how to leave a comment there.

I think, there is a slight mistake in item #19: in the fifth example (BAy), i think a « 9″ and a « 6″ should be interchanged. Not totally sure though.

… it doesn´t change the outcome of the solution, of course.

Absolutely! You really solved this item.

You are right. I updated the picture. Thanks and congratulations for your rigor !

Science quiz A Question 3 answer should be A, not B.

The circumference of the earth…

http://en.wikipedia.org/wiki/Equator

(the quiz is correct, maybe you made a confusion between kilometers and miles)