What are the problems of the Eiger?

Are a square's adjacent sides perpendicular? How much water do you use when you flush the chain? What are the four properties of money please identify and explain? How do you write seven hundred forty-six millions? What is 11.5 percent of 8000? How many edges and vertices does a cuboid and cube have? How do you write decimal numbers as a fraction or mixed number in the simplest form? How do you write 48106 in words? For 0x90degrees solve the equation 5tan x equals 1? What is the meaning inferrence? How do you solve The Red Pyramid puzzle 3? How many feet are in a trillion yards? In a town survey residents were asked whether they would approve of a tax increase to build a new library. four-sevenths of the residents were in support of the new library and the rest were opposed.? How many days does it take to count to a billion? Are polyhedrons sometimes not prisms or pyramids? What was the yard also known as the stinkyard? Is 5 divisible by 10? What is the abbreviation for numbers Ten One Tenth Hundredth Thousandth Millionth Billionth Ten Billionth? What is a four-sided figure with only one pair of parallel lines and no right angles called? What is the address of sort code 09-01-29?