How can you take 2 from 5 and leave 4?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

A man dies of old age on his 25 birthday. How is this possible?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

Which is the smallest number that you can write using all the vowels exactly once?

Where do you go to learn how to make ice cream?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

What can go through glass without breaking it?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?