How many triangles are there on the puzzle below?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

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

What does a man do only once in his lifetime, but women do once a year after they are 29?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

Can you solve below mathematical equation?

2^1234 - 2^1233

Can you decipher the below rebus?

PBLUESAISNUERSES

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?