Math Formulas

Magyarország: Unified final exam for high schools - Mathematics - intermediate level [06.05.2014.]

The price of a product was raised by 20% one month and another 20% the next month. The two price increases together correspond to what percentage price increase?
Justify your answer!

MR-808 / 7.

What number can stand in the place of X in the five-digit number 2582X , if the number is divisible by 3?
Explain the answer!

MR-810 / 9.

Solve the following equation:

$\log_{2} (x + 1) = 5$

MR-811 / 10.

An office computer network consists of six computers. Each machine is directly connected to three of these others.
Draw a graph that illustrates this network.