How many triangles can you find in this given picture?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Who always enjoys poor health?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

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.

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?