What begins with T, ends with T, and has T in it?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Take one out and scratch my head, I am now black but once was red. What am I?

What's a single-digit number with no value?

How many triangles can you find in this given picture?

People make me, save me, change me, raise me. What am I?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?