MathDB

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Part of 2014 Junior Regional Olympiad - FBH

Problems(3)

Junior Regional Olympiad - FBH 2014 Grade 6 Problem 1

Source:

10/3/2018
If aa and bb are digits, how many are there 44 digit numbers 3ab4‾\overline{3ab4} divisible with 99 . Which numbers are they (44 digit numbers)?
Digits
Junior Regional Olympiad - FBH 2014 Grade 7 Problem 1

Source:

10/3/2018
If for numbers aa, bb and cc holds a:b=4:3a : b=4:3 and b:c=2:5b : c=2:5, find the value (3a−2b):(b+2c)(3a-2b):(b+2c)
proportion
Junior Regional Olympiad - FBH 2014 Grade 8 Problem 1

Source:

10/3/2018
Compare numbers A=5+25A=5+2\sqrt{5} and B=45+205B=\sqrt{45+20\sqrt{5}}
Compare