MathMaster logo

MathMaster

  1. Home
  2. general
  3. eight children of which four girls barca gabika klara tana and four boys janko libor pavol radko were lined up in two rows
Question

Eight children, of which four girls (Barča, Gabika, Klára, Táňa) and four boys (Janko, Libor, Pavol, Radko), were lined up in two rows, in two groups (left and right) in four rows. They played silent mail and everyone could pass a message to either the child next to them or the child behind them. There were five transmissions before the message got from one of the children in the first row to the first of the children in the fourth row. We know that: ·The handover of the report took place between the children in the following order: Barča- Janko-Libor-Klára-Gabika-Pavol. Barča stood in the first row, but she did not stand in the same crowd as Klára. ·Janko stood in the left crowd. Who could stand in the same row as Paul? (A) only Radko (B) just anyone from Táňa, Radko (C) just anyone from the couple Gabika, Táňa (D) anyone from the trio Gabika, Táňa, Radko

189

likes
943 views

Answer to a math question Eight children, of which four girls (Barča, Gabika, Klára, Táňa) and four boys (Janko, Libor, Pavol, Radko), were lined up in two rows, in two groups (left and right) in four rows. They played silent mail and everyone could pass a message to either the child next to them or the child behind them. There were five transmissions before the message got from one of the children in the first row to the first of the children in the fourth row. We know that: ·The handover of the report took place between the children in the following order: Barča- Janko-Libor-Klára-Gabika-Pavol. Barča stood in the first row, but she did not stand in the same crowd as Klára. ·Janko stood in the left crowd. Who could stand in the same row as Paul? (A) only Radko (B) just anyone from Táňa, Radko (C) just anyone from the couple Gabika, Táňa (D) anyone from the trio Gabika, Táňa, Radko

Expert avatar
Nash
4.9
85 Answers
Pred vyriešením úlohy si najskôr uvedomme niektoré faktory. Vo východiskovom stave máme dva zástupy, každý pozostávajúci zo štyroch rád. Z toho vieme, že Pavol stojí v jednom zástupe a že Janko stojí v ľavom zástupe. Taktiež vieme, že medzi Barčou a Klárou nie je možné, aby stáli v rovnakom zástupe.
Ak poznáme poradie odovzdania správy medzi deťmi, môžeme tento fakt využiť na určenie možných umiestnení detí v zástupoch.

Podľa zadaného poradia odovzdania správy vieme, že Barča odovzdala správu Jankovi, Janko odovzdal správu Liborovi, Libor Kláre, Klára Gabike a Gabika Pavlovi. Musíme teraz preskúmať, v akej časti zástupu mohla daná schéma z odovzdávania správ nastávať.

Môžu existovať nasledujúce prípady:
1) Ak Janko stojí v ľavom zástupe, potom Barča musí stáť vpravo od Janka, aby mohla odovzdať správu. To znamená, že Klára sa musí nachádzať v ľavom zástupe. Z toho vyplýva, že Gabika sa musí nachádzať v pravom zástupe.
2) Ak Janko stojí vpravo, potom musí Barča stáť vľavo od Janka. Z toho vyplýva, že Klára musí stáť vpravo od Barči a Gabika v ľavom zástupe.

Z týchto dvoch prípadov nám vyplýva, že Gabika a Pavol nemôžu mať rovnaké umiestnenie v rade.
Takže správna odpoveď je (D) ktokoľvek z trojice Gabika, Táňa, Radko.

Frequently asked questions (FAQs)
What is the derivative of sin(x) + cos(x) - tan(x) - sec(x) + csc(x) - cot(x) ?
+
What is the measure of an exterior angle of a regular pentagon?
+
Question: What is the slope of the line passing through the points (4, 3) and (-2, 5)?
+
New questions in Mathematics
12-6x=4x+2
Evaluate limx→∞tan−1(x) using that y=tan−1(x) exactly when x=tan(y) . (Hint: Both tan and tan−1 are continuous!)
3x+5y=11 2x-3y=1
Moaz wanted to test whether the level of headache pain (on a scale of 1 – 10) changes after taking Advil. He collected data from 9 participants and calculated the difference in headache pain before and after taking Advil (summarized in the table below). Determine W observed for this test. Difference Scores -2 -4 0 +1 +3 -2 0 -3 -5 Also, What is the degrees of freedom for this test?
-4y-6(2z-4y)-6
A box contains 18 blue balls and 33 white balls. What is the ratio of the blue to white balls?
find f(x) for f'(x)=3x+7
What’s the slope of a tangent line at x=1 for f(x)=x2. We can find the slopes of a sequence of secant lines that get closer and closer to the tangent line. What we are working towards is the process of finding a “limit” which is a foundational topic of calculus.
19) If the temperature of -8°C decreases by 12°C, how much will it be? a)-20°C -4°C c) 4°C d) 20°C
You are the newly appointed transport manager for Super Trucking (Pty) Ltd, which operates as a logistics service provider for various industries throughout southern Africa. One of these vehicles is a 4x2 Rigid Truck and drawbar trailer that covers 48,000 km per year. Use the assumptions below to answer the following questions (show all calculations): Overheads R 176,200 Cost of capital (% of purchase price per annum) 11.25% Annual License Fees—Truck R 16,100 Driver Monthly cost R 18,700 Assistant Monthly cost R 10,500 Purchase price: - Truck R 1,130,000 Depreciation: straight line method Truck residual value 25% Truck economic life (years) 5 Purchase price: Trailer R 370,000 Tyre usage and cost (c/km) 127 Trailer residual value 0% Trailer economic life (years) 10 Annual License Fees—Trailer R 7,700 Fuel consumption (liters/100km) 22 Fuel price (c/liter) 2053 Insurance (% of cost price) 7.5% Maintenance cost (c/km) 105 Distance travelled per year (km) 48000 Truck (tyres) 6 Trailer (tyres) 8 New tyre price (each) R 13,400 Lubricants (% of fuel cost) 2.5% Working weeks 50 Working days 5 days / week Profit margin 25% VAT 15% Q1. Calculate the annual total vehicle costs (TVC)
Use the sample data and confidence level given below to complete parts​ (a) through​ (d). A drug is used to help prevent blood clots in certain patients. In clinical​ trials, among 4336 patients treated with the​ drug, 194 developed the adverse reaction of nausea. Construct a ​99% confidence interval for the proportion of adverse reactions.
A bag has 4 green lollipops, 3 white lollipops, and 1 black lollipop. What is the probability of drawing a white lollipop?
On+January+10+2023+the+CONSTRUCTORA+DEL+ORIENTE+SAC+company+acquires+land+to+develop+a+real estate+project%2C+which+prev%C3% A9+enable+50+lots+for+commercial+use+valued+in+S%2F+50%2C000.00+each+one%2C+the+company+has+as+a+business+model+generate+ cash+flow+through%C3%A9s+of+the+rental%2C+so+47%2C+of+the+50+enabled+lots+are+planned to lease+47%2C+and+ the+rest+will be%C3%A1n+used+by+the+company+for+management%C3%B3n+and+land+control
Which statement best describes the key changes in perspectives on inclusion? An inclusive program must consider the unique experiences of every child and family as well as the child's strengths and needs. There is a shift in thinking about individual programs as "inclusive programs" to thinking about inclusion as something that reflects the cultural influence of the family. There is a greater emphasis on barriers to full participation and the acknowledgement that all children are unique and must be fully and meaningfully engaged in a program. In an inclusive program all participants are accepted by their peers and other members of the community.
1. A jeweler has two gold bars, with 80% purity and the other with 95% purity. How much of each must be melted to obtain a 5 kilo ingot with 86% purity?
y′ = 2x + 3y x′ = 7x − 4y x(0) = 2 y(0) = −1 sisteminin ¸c¨oz¨um¨un¨u bulunuz. (Lineer Denk. Sis.)
Square root of 169 with steps
How many digits are there in Hindu-Arabic form of numeral 26 × 1011
Triangle ABC has AB=AC and angle BAC =X, with X being less than 60 degrees. Point D lies on AB such that CB = CD Point E lies on AC such that CE= DE Determine angle DEC in terms of X
-Please answer to the following questions: What is the price elasticity of demand? Can you explain it in your own words? What is the price elasticity of supply? Can you explain it in your own words? What is the relationship between price elasticity and position on the demand curve? For example, as you move up the demand curve to higher prices and lower quantities, what happens to the measured elasticity? How would you explain that? B-Assume that the supply of low-skilled workers is fairly elastic, but the employers’ demand for such workers is fairly inelastic. If the policy goal is to expand employment for low-skilled workers, is it better to focus on policy tools to shift the supply of unskilled labor or on tools to shift the demand for unskilled labor? What if the policy goal is to raise wages for this group? Explain your answers with supply and demand diagrams. Make sure to properly cite and reference your academic or peer-reviewed sources (minimum 2).

You might be interested in