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(#M40034989) A WEBSITE QUESTION solve Keep an EYE

After a three-hour drive, I stopped my car in front of a wall with three doors: a silver door on the left, a gold door in the middle, and an iron door on the right. Which door would I open first?

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(#M40034988) A WEBSITE QUESTION solve Keep an EYE

A pyramid and a tetrahedron with edges of the same length are glued together on a triangular face. How many faces does the resulting solid have?

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(#M40034987) A WEBSITE QUESTION solve Keep an EYE

Two trains, each 400 meters long, pass each other completely in 10 seconds when they are moving in opposite directions. Moving in the same direction, they pass each other completely in 20 seconds. Find the speed of the faster train.

Asked In A website pranshu goyal (11 years ago)

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(#M40034986) BOOK QUESTION solve Keep an EYE

The sum of the digits of a two-digit number X is Y. The sum of the digits of X^2 is Y^2. Find X.

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(#M40034985) BOOK QUESTION solve Keep an EYE

Three numbers are in the ratio 2:3:4. If the sum of their squares is 1856, find the numbers.

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(#M40034984) BOOK QUESTION solve Keep an EYE

if cos A=11/15,find sin A and cot A.

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(#M40033791) A WEBSITE QUESTION solve Keep an EYE

Use FIVE 0's and any math operators to get 120.

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(#M40033725) MATHS OLYMPIAD QUESTION solve Keep an EYE

MMMMDCCI+MMMMDCCCI=?

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(#M40033447) A WEBSITE QUESTION SOLVE Keep an EYE

About 1650 B. C., Egyptian scribe Ahmes, made a transcript of even more ancient mathematical scriptures dating to the reign of the Pharaoh Amenemhat III. In 1858 Scottish antiquarian, Henry Rhind came into possession of Ahmes's papyrus. The papyrus is a scroll 33 cm wide and about 5.25 m long filled with funny math riddles. One of the problems is as follows:
100 measures of corn must be divided among 5 workers, so that the second worker gets as many measures more than the first worker, as the third gets more than the second, as the fourth gets more than the third, and as the fifth gets more than the fourth. The first two workers shall get seven times less measures of corn than the three others.
How many measures of corn shall each worker get? (You can have fractional measures of corn.)

Asked In A website pranshu goyal (11 years ago)

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(#M40033446) A WEBSITE QUESTION SOLVE Keep an EYE

We know little about this Greek mathematician from Alexandria, called the father of algebra, except that he lived around 3rd century A.D. Thanks to an admirer of his, who described his life by means of an algebraic riddle, we know at least something about his life.
Diophantus's youth lasted 1/6 of his life. He had his first beard in the next 1/12 of his life. At the end of the following 1/7 of his life Diophantus got married. Five years from then his son was born. His son lived exactly 1/2 of Diophantus's life. Diophantus died 4 years after the death of his son.
How long did Diophantus live?

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