Can you solve the below tricky visual equation?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

What is the fastest way to double your money?

Replace the question mark with the correct number in the below-given picture?

Jessica is telling her friends this story and asks them to guess if it’s the truth or a lie: “There was a man sitting in a house at night that had no lights on at all. There was no lamp, no candle, and no other source of light. Yet, he sat in the house and read his book happily.” Her friends say she’s lying, but Jessica corrects them and says she’s telling the truth. Jessica’s story is true—but how?

What makes this number unique: 8,549,176,320?

I have eight fingers and two thumbs but I do not live. What Am I?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?