Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

You can hear me, but you can't touch or see me.

What am I?

Can you find the key in the picture below?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

What is the Surname of Barbie Doll?

A car is crossing a 20 km-long bridge. The bridge can support at most 1500kg of weight over it. If somehow, the weight on the bridge becomes more than that, it will break.

Now, the weight of the car is exactly 1500kg. At the midway, a bird comes and sits on the roof of the car. This bird weighs exactly 200 grams.
Can you tell if the bridge breaks at this point or not?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

Can you solve below mathematical equation?

2^1234 - 2^1233

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?