Functions - practice for 14 year olds - last page
Number of problems found: 2620
- Inflation
Once upon a time, the tsar owned a money printer and printed and printed. Printing money prices went up in the first year 2.7 %, in the second 2.1%, in the third 3.6%, and in the fourth 5.4%. Then tsar failed in the election. Calculate the average annual - Circles
Three circles of radius 30 cm, 28 cm, and 37 cm are mutually tangent. What is the triangle perimeter whose vertices are the circles' centers? - Two doctors
Doctor A will determine the correct diagnosis with a probability of 89% and doctor B with a probability of 75%. Calculate the probability of proper diagnosis if both doctors diagnose the patient. - Ladislav in Amsterdam
Laco went (was sent) to a conference in Amsterdam for a reward. The conference fee was € 1304. Calculate how many books Ladislav could buy at the price of 32 and 22 euros if he doesn't want to fill the whole home library, and he can buy only 52 books
- Maximum area of rhombus
Calculate the interior angles at which the equilateral rhombus has a maximum area. - Road
Between cities A and B is a route 13 km long of average 7‰ stúpanie. Calculate the height difference between cities A and B. - Drunk man
The drunk man has 2.6‰ of alcohol in his blood. How many grams of alcohol has in his blood if he has 5 kg of blood? - Chickens and rabbits
In the yard were chickens and rabbits. Together they had 23 heads and 76 legs. How many chickens and how many rabbits were in the yard? - Playing cards
How many possible ways are there to shuffle 8 playing cards?
- Percentages and numbers
How many percent is number 69 smaller than number 276? - Ships
At 8:40, the ship set sail at 12 km/h. At 19:10 followed by 29 km/h sailboat. When does the sailboat catch up with the ship? How many minutes will catch uptake? - Seating
How many ways can 7 people sit on 5 numbered chairs (e. g., seat reservation on the train)? - Slope of track
Calculate the average slope (in permille and even in degrees) of the rail tracks between Prievidza (309 m AMSL) and $town ($mnm m AMSL) if the track is $s km long. - Party
At the party, everyone clinked with everyone. Together, they clink $strng times. How many people were at the party?
- Temperature calculus
Calculate the percentage of temperature increase if changed from 18°C to 33°C. - Phone numbers
How many 9-digit telephone numbers can be compiled from the digits 0,1,2,..,8,9 that no digit is repeated? - Engineer Kažimír
The TV show example beautifully illustrates the difference between politicians-demagogues and reasonable people with at least primary education. Engineer Kažimír says that during their tenure, there was a large decline in the price of natural gas. The pri - Profitable bank deposit 2012
Calculate the value of what money lost creditor with a deposit € 5200 for 5 years if the entire duration is interesting 3% p.a. and tax on interest is 19%. Annual inflation is 4.4% (Calculate what you will lose if you leave money lying idle at negative in - The game of blind man's buff
Slovak levy system makes the gross wage deductions from your pay state employees. It has two components - part employee pays and part pays by the employer. Suppose that the super gross wage paid 21% employer. After deducting these contributions, we receiv
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