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

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

How can you make number one disappear by adding something to it?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

What has lots of eyes, but can’t see?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

With the help clues provided in the image, can you find the 5 digit key?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?