The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Where do you go to learn how to make ice cream?

What do you answer even though it never asks you questions?

Why is it very easy to weigh a fish?

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

Can you find out the total number of triangles in the given figure?

What has one letter and starts with an E?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1