What goes up but never comes down?

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

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

What am I?

Next Number in the Series,

5, 16, 49, 104, ?

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

How many times can you subtract the number 5 from 25?

A sundial has the fewest moving parts of any timepiece. Which has the most?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?