What does this rebus puzzle means ?

Do You See It?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

What is the next number in the series?

15 29 56 108 208 ?

People put me on the table and cut me but do not eat me. What am I?

What can you deduce from the following BrainBat?

CRY
LMKI

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

I don't get anymore wetter, no matter how much rain falls on me.

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?