Math Puzzle
Logic Puzzle
Trigonometry
Fun Facts
100
A blueberry cheesecake meant for dessert was already half-eaten in the afternoon. Below are the children's replies when their mom checked with them
Robert: Sarah ate the cake
Sarah: Robert lied
Tony: Come on! I didn't even open the fridge.
Only one of them told the truth. Who ate the cake?
Tony
(Sarah is telling the truth and Tony did open the fridge)
100
Tuesday
100
In the triangle ABC, AB = BC = 29, and AC = 42. What is the area of the triangle ABC?
420
Height is
sqrt(29^2-21^2)
200
In a room with 8 people, everyone shakes hands with everybody else exactly once. How many handshakes are there?
(8*7)/2=28
200
1) Down
2) Double
200
If all 4 circles are equal and the radius is 6 inches, what is the area of the shaded region? Leave your answer in terms of pi
144 - 36 pi
200
How many Earths can fit inside the sun?
(FYI, the diameter of Earth is about 8,000 miles)
1.3 million
300
I phoned my mom to help me answer this, the final question on a quiz show: How many integers equal their own squares? Mon said _?__. She was right!
Two
(Zero and One)
300
The Letter E
300
In the given regular hexagon, ABJI and FEHG are squares with areas of 18 and 32 respectively. JBK is equilateral and FE = BC.
What is the area of KBC?
12
300
What is the name of the division sign?
Obelus
400
What is the tenth digit of the product
1 * 2 * 3 * ... * 98 * 99?
0
400
One Thousand
400
A large equilateral triangle is formed from 64 small equilateral triangles, each having a side of 3. Find the perimeter of the large equilateral triangle.
one side is 24, so the perimeter is 72
400
How many people do we need to have in a room, so that there's a 50% chance that two people have the same birthday?
23
500
A 600-pound pumpkin was entered in a contest. When it arrived, it was 99% water. The pumpkin sat for days in the hot sun, lost some weight (water only) and is now 98.5% water. How much does it weigh?
400 pounds
500
e, n, t
(eight, nine, ten)
500
A semicircle is inscribed in an isosceles triangle with base 16 and height 15 so that the diameter of the semicircle is contained in the base of the triangle as shown. What is the radius of the semicircle?
r * 17 = 15 * 8
r=120/7
500
What is the world record for pi memorization?
Sharman, Suresh Kuma from India memorized 70,030 digits. It took him 17 hours 14 min.