Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

Today is a very icy and cold morning in Newcastle. Mr Shearer, an office bus driver arrived to pick up the employees from the last stop. Shearer suddenly remembers that he needs to pick a newly joined 4miles to the north. Mr Shearer lost his direction compass, a few minutes later Shearer is able to figure that he is moving in the correct direction i.e. north. How did Shearer know that he is moving in the correct direction?

Find the value of "a" by solving the maths equation in the picture below:

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Complete the table series riddle by finding the number that can replace "??".

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Find the missing letter in the last circle logically in the given below picture.

What part of Turkey has the most feathers?

What am I?