You need to arrange three 7 and mathematical symbols to form number 1?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

What is the word or phrase?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

The dirtier I get, the whiter I look. Who am I?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

No matter how little or how much you use me, you change me every month. What am I?