Can you find out who is the kidnapper in below Picture and why, Explain ?

I have Rs.50 and I spend it in the way as below.

In the four images below, can you find the odd one out?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

why number 8549176320 is one of a kind?

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

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

Can you fill the blank with the correct number?

6 30 870 756030 _____

There is a basket full of hats. Three are white and two are black. Three men, Tom, Tim, and Jim, each take a hat out of the basket and put it on their heads without seeing the hat they selected or the hats the other men selected. The men arrange themselves so Tom can see Tim and Jim’s hats, Tim can see Jim’s hat, and Jim can’t see anyone’s hat. Tom is asked what color his hat is and he says he doesn’t know. Tim is asked the same question, and he also doesn’t know. Finally, Jim is asked the question, and he does know. What colour is his hat?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?