How many triangles can you find in this given picture?

What is next number in the pattern below:

131 517 192 123 ?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

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

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.