15 minutes 00 seconds

1. Which number comes next in the sequence: 2 , 6 , 12 , 20 , 30

2. What comes next : 4 , 9 , 19 , 39 , 79

3. What is the result of the operation 6 x 13 + 40 - 24

4. A book costs $25 and there is an 8% tax. How much do you have to pay

5. What is the value of X : X = 145 / 2 - 7

6. What is three quarters of 80

7. Solve for x in the following equation: 4x - 20 = 92

8. What is the next number in the sequence: 3, 9, 27, 81

9. What is the result of the operation 9 x 12 - 4 x 11

10. In a triangle, the length of the hypotenuse is 10 cm and one of the legs is 6 cm. What is the length of the other leg c² = a² + b²

11. A circle has a diameter of 14 cm. What is the area of the circle Area = 3.1416 × (diameter/2)²

12. A rectangular prism has a length of 8 cm, a width of 11 cm, and a height of 3 cm. What is the volume of the prism

13. A jacket costs $40 after a 20% discount . What was the original price

14. If 3 workers paint 3 walls in 3 hours , how long will it take 6 workers to paint 6 walls

15. The average of 5 numbers is 20. The average of 3 of them is fifteen . What is the average of the other 2

16. A 240L tank already has 120L in it. You add 30L per hour but it leaks 10L per hour . How many hours to fill it

17. Complete the sequence : 3 , 7 , 16 , 35 , 74

18. A car travels from city A to city B at 60 mph and returns from city B to city A at 40 mph . What is the average speed for the entire round trip

19. What is the value of x in the equation: x/2 + x/3 = 25

20. A group of friends want to share some money equally. If they have $1200 and there are 5 friends, but 2 friends decide to leave, how much money will each of the remaining friends get

21. What is the result of the equation: 60 × 5 + 72/8

22. If the radius of a circle is doubled, how many times larger does its area become

23. What comes next : 2, 6, 12, 20, 30, 42, 56,

24. A cube has a side length of 6 cm. What is its volume

25. What is the value of x in the equation 11x - 19 = 7x + 33

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Albert Einstein: 5 Remarkable Intellectual Achievements

Albert Einstein is widely regarded as one of the most influential thinkers in modern science. Although his IQ was never officially measured, his extraordinary ability to understand complex ideas and develop revolutionary theories had a profound impact on our understanding of the universe.

Here are five of his most remarkable intellectual achievements:


1. Special Relativity — 1905

Einstein developed the theory of special relativity, which changed our understanding of space and time. It also led to his famous equation E = mc², showing the relationship between mass and energy.


2. The Photoelectric Effect — 1905

Einstein explained how light can transfer energy to matter through packets of energy called photons. This work was fundamental to the development of modern quantum physics and earned him the 1921 Nobel Prize in Physics.


3. Brownian Motion — 1905

Einstein provided a mathematical explanation for Brownian motion, the random movement of tiny particles suspended in a fluid. His work helped provide important evidence for the existence of atoms and molecules.


4. General Relativity — 1915

Einstein developed the theory of general relativity, proposing that gravity is connected to the curvature of spacetime. The theory fundamentally changed our understanding of gravity, space and the universe.


5. A New Way of Thinking About the Universe

Beyond individual discoveries, Einstein demonstrated the power of using imagination, mathematics and logical reasoning to challenge established ideas. His work continues to influence physics and scientific research today.