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Mathematics
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Key Flex
  • Member for 7 years, 5 months
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25
In a village, $90\%$ of people drink Tea, $80\%$ Coffee, $70\%$ Whiskey, $60\%$ Gin. Nobody drinks all four. What percentage of people drinks alcohol?
Aug 7, 2018
answer
17
What is wrong in this proof by strong induction that all natural numbers are even
Jul 22, 2018
answer
14
What makes a linear system of equations "unsolvable"?
Jul 2, 2018
answer
13
How can I deduce the hypotenuse from the information given?
Dec 10, 2018
answer
12
Three coins are tossed. If one of them shows a tails, what is the probability that all three coins show tails?
Aug 21, 2018
answer
11
Find the value of $x^2 + y^2 + z^2$.
Jun 28, 2018
answer
8
Simplify $\sqrt{\dfrac{\sqrt[3]{64} + \sqrt[4]{256}}{\sqrt{64}+\sqrt{256}}}$ into $\dfrac{\sqrt{3}}{3}$
Jan 9, 2019
answer
7
Evaluating definite integral of $p(x)$
Jul 15, 2018
answer
7
Evaluating trig integral $\int \tan^3x \sec^2x dx$
Mar 14, 2019
answer
7
Does $\cot^2 $ equal $ \cos^2/ \sin^2$?
Feb 11, 2019