Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Using Only Five 5's and any mathematical operator make sum as 37

Bay of Bengal is in which state?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

What is next number in the pattern below:

131 517 192 123 ?

They are three errirs in this question. Can you find them?