Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

John bought a new car. He has a habit of eating ice cream from a particular ice cream shop while returning home from office. Whenever, he eats strawberry ice cream, he faces no problem. But whenever, he eats chocolate ice cream, the car starts giving problem. At first, he thinks, it is just a co-incidence but when this awkward incident happens for 3-4 times, he reports this problem to the company.

The mechanic of the company checks but finds no problem at all. The next day, when he stops by to eat chocolate ice cream, the car again starts giving problem.

Can you find the possible reason?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

How can you make number one disappear by adding something to it?

Look at the picture and find out which square is not linked with any of the other squares.

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

I am sure no one can have two things for dinner. what are they?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?