A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

Spot what is wrong here in below Picture?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

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 ?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

What does this mean?

CCCCCCC

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?