What is the word or phrase below?
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What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Spot the cat in the picture below

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

Why is the Hole below a Lock?