I’m tall when I’m young, and I’m short when I’m old. What am I?

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?

Count the number of triangles in the below picture?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

Complete the table series riddle by finding the number that can replace "??".

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

What do you get if you add 2 to 100 four times?

Can you replace the question mark with the correct number in the below table sequence?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?