A TV presenter in Singapore recently brought up a math problem that has been driving the Internet crazy. At first, the problem seems impossible to solve. But once you use some logic, the solution is actually rather simple.

One day, a person went to horse racing area, Instead of counting the number of human and horses, he instead counted 74 heads and legs. Yet he knew the number of humans and horses there. How did he do it, and how many humans and horses are there?

MORE What is the hardest math problem? MORE What is the hardest math question? If only international or American questions, 1. Where did the last dollar go? Which shows that even though something sounds logical, it might not be.

There is no "last dollar". There is a fallacy in the thought process and calculations. Probably the most difficult recently solved problem was Fermats enigama, which involved cubes. It has taken many years and the consolidation of the work of dozens of people to resolve.

Information required to complete the question You are given a triangle that has sides of 66cm, 73cm, and 94cm. One of the angles is right-angled meaning that it is possible by trial and error to calculate what each of the angles are.

Inside this triangle is a square, so that three corners are in contact with the lines bounding the triangle. One of the sides or the square, which we shall now dub z, is also tangent to a circle, with a radius such that the centre of the circle lies along the side of the triangle with length 73cm.

You are also given a regular octagon, which you are told is the same area as the total are of the circle and triangle if they are taken together i. The area of this square is dubbed x. Part 1 Give the value, to three significant figures, of x. What is the length of the third side? Tensor calculus may be the most difficult non esoteric branch ofmathematics.

Multivariate differential vector calculus may soundscary, but most folks can solve problems of this nature with just alittle bit of training.

Your cat solves problems like these everytime she pounces on a bird. But what are tensors? Are these more generalized concepts ofvectors? And are there imaginary tensors? Inquiring mindswant to know.The World's Hardest Brain Teasers.

Here is a collection of my most interesting and mind-improving brain teasers. Many of the answers should give you a strategy for thinking, which will carry over to many other problems and provide you with thinking and problem-solving methods. Today, the hardest math problem is of interest to me.

Not because I want to solve it (far from it, actually) but because the fact that there is actually a hypothesis in the world that has not been proven for almost years now is very intriguing. Oct 11, · Best Answer: I think most mathematicians would say that the toughest problem still out there is the Riemann Hypothesis.

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year old problem. It has stimulated a lot of math, but nobody has any idea how to either prove or disprove it.

Pretty simple to state Status: Resolved. A problem is class P if there exists an efficient algorithm to solve it, and it is not-P if there isn’t.

And there’s the rub, as Hamlet did say, and in the same speech. And there’s the rub. Since the Renaissance, every century has seen the solution of more mathematical problems than the century before, and yet many mathematical problems, both major and minor, still remain unsolved.

Prizes are often awarded for the solution to a long-standing problem, and lists of unsolved problems (such as the list of Millennium Prize Problems) receive considerable attention.

As is frequently the case with word problems, setting up the equations is the hardest part. Once that's done, the rest is relatively easy.

Remember always to answer what the question asks - don't stop once you've solve for x, because that may be only part of what the question asked - .

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