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Questions Tagged with "contest math" (Page 2)

Explore solved questions tagged with "contest math" or help others by answering their unsolved questions related to "contest math".

Showing an infinite sequence is constant under some condition

1 answer

Mathematics Asked 2 years ago

Solving for positive reals: $abcd=1$, $a+b+c+d=28$, $ac+bc+cd+da+ac+bd=82/3$

5 answer

Mathematics Asked 2 years ago

Induction. Circular track and fuel stations

2 answer

Mathematics Asked 2 years ago

Find the equation of the circle which touches the curve $x^2+xy-y^2=4$ at $(2,2)$ and the line $3x-y+6=0$

1 answer

Mathematics Asked 3 years ago

Proving $abcd+3geq a+b+c+d$

4 answer

Mathematics Asked 3 years ago

Question 6 of the 2nd round of the 15th Iran mathematical olympiad.

1 answer

Mathematics Asked 3 years ago by DBruwel

A geometry problem with the reflection of the incenter

5 answer

Mathematics Asked 3 years ago by Pet123

Let $n$ be an integer. If the tens digit of $n^2$ is 7, what is the units digit of $n^2$?

6 answer

Mathematics Asked 3 years ago by user713999

How can we show that there is a zero of $f$

2 answer

Mathematics Asked 3 years ago

(proposed) elegant solution to IMO 2003 P1

0 answer

Mathematics Asked 3 years ago by MNIShaurya

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