Logic riddles

An English word means carefully include everything. Remove its third then it passes from side to side. Remove its second then it is a furrow. Remove its second then it describes the puzzle to those who cannot solve it.
What is the word?

Answer

THOROUGH --> THROUGH --> TROUGH --> TOUGH.

Two bodies with ribs, exposed.
What am I?

Answer

Ladder.

I warn you about meetings, and I assist you in your life, I can help you do most of your work, unless I have a bug.
What am I?

Answer

Computer.

Two friends go to a cinema. They walked to the booth and ordered a ticket each. The ticket prices are $8(admission with popcorn), and $5(admission only). The first friend gave the cashier a $10 note and was asked to choose between the two types of tickets, which he replied, "$8".
However, the second friend paid $10 and the cashier, without hesitation, the cashier gave him a $8 ticket. Why didn't he ask which ticket he prefers?

Answer

The second friend paid with two $5 notes, so the cashier knew that if he wanted a $5 ticket, he would only pay $5. (I said that the second boy paid $10, not that he gave the cashier a $10 note!)

Once there was a butcher who was 5'9". There were 6.75 lbs for every inch.
What does he weigh?

Answer

The Butcher weighs meat.

What's the end of everything, yet ends nothing?

Answer

The letter G!

Why is a raven like a writing desk?

Answer

Edgar Allan Poe wrote on both of them.

There are a few trees in a garden. On one of them, a pear tree, there are pears (quite logical). But after a strong wind blew, there were neither pears on the tree nor on the ground. How come?

Answer

At first, there were 2 pears on the tree. After the wind blew, one pear fell on the ground. So there where no pears on the tree and there were no pears on the ground.

Imagine you are in a sinking boat and surrounded by sharks.
How do you survive?

Answer

Just quit imagining.

What is something you will never see again?

Answer

Yesterday

I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves everyday.
What am I?

Answer

Tomorrow.

Can you solve this riddle?

You walk to a beach and a passing bystander has something that interests you. 3 switches. 3 bulbs. 1 ladder in a dark room. 1 bulb doesn't light up (it holds gold). 2 have booby traps and do light up. You can only flip 2 switches, then you have to flip them back. Stepping on the mats in front of the stands activates the trap. How do you get the gold without being trapped?

Answer

Get the ladder and go behind the stands. Feel the bulbs, the one that isn't hot contains the gold! ; )