Mathematics
What is 25% of 200?
50
Which line divides the Earth into the Northern and Southern Hemispheres?
Equator
The first President of Uzbekistan
Islom Abdug'aniyevich Karimov
A man walks into a room with a match, a kerosene lamp, a candle, and a fireplace. What should he light first?
A) Candle
B) Fireplace
C) Match
D) Kerosene lamp
Answer: C) Match
What gas do plants absorb during photosynthesis?
Carbon dioxide (CO₂)
What is the next number in the sequence: 2, 4, 8, 16, ?
32
What is the official language of Brazil?
Portuguese
During which years did World War I take place?
1914-1918
You see a boat filled with people. It hasn’t sunk, but when you look again you don’t see a single person on board. Why?
All the people are married
What is the chemical symbol for gold?
Au
A triangle has angles of 35° and 65°. What is the measure of the third angle?
80
Which river flows through the city of London?
River Thames
What does the word “Khamsa” mean in Alisher Navoi’s work, and can you name at least 3 of its five parts?
“Khamsa” means “five”, referring to the five poems in the collection. “Layli and Majnun,” “Hayrat ul-Abror,” “Farhad and Shirin,” “Sab’ai Sayyar,” and “Saddi Iskandari”
If you have two banknotes that add up to 3000 sums and one of them is not a 2000-sum banknote, what are the two banknotes?
1000 sums and 2000 sums
(The one banknote is not 2000 sums — but the other one is!)
How many elements are currently known in the periodic table?
118
What is the sum of the interior angles of a polygon with 12 sides?
1800
Mount Everest lies on the border of which two countries?
Nepal and China (Tibet Autonomous Region)
In which year did Christopher Columbus first arrive in the Americas?
1492
You’re in a room with 3 switches and a closed door. One switch controls a lightbulb inside the room. You can only open the door once. How do you figure out which switch controls the light?
Turn on switch 1 and leave it on for a few minutes. Then turn it off and turn on switch 2. Open the door.
If the bulb is on: switch 2.
If off but warm: switch 1.
If off and cold: switch 3.
What is the name of the process where a liquid changes into a gas?
Evaporation
Find the length of the diagonal of a rectangular box with length 3 cm, width 4 cm, and height 12 cm.
13 cm
Which countries does the Nile River pass through? Name at least three.
Egypt, Sudan, South Sudan, Uganda, Ethiopia, Rwanda, Burundi, Tanzania, Kenya, and the Democratic Republic of Congo
In which year did the Titanic sink after hitting an iceberg on its maiden voyage?
1912
Three people check into a hotel room that costs 3000 sums. They each pay 1000 sums. Later, the hotel realizes the room should have only cost 2500 sums, so the manager gives 500 sums to the bellboy to return to the guests. The bellboy, however, decides to keep 200 sums for himself and gives 100 sums back to each guest. Now each guest has paid 900 sums (totaling 2700 sums), and the bellboy has 200 sums. That makes 2900 sums. Find the logic
There is no missing money — the logic is misleading.
Explanation:
The 2700 sums the guests effectively paid includes:
2500 sums for the room
200 sums taken by the bellboy
What is the atomic number of the element with the symbol ‘Au’, and is it a metal, non-metal, or metalloid?
The atomic number of Au (Gold) is 79, and it is a metal.