What is next number in the pattern below:

131 517 192 123 ?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Can you count the number of matches in the picture below ?

A gardener planted the Lemon trees in a mathematical ordered way (i.e. he planted a tree in rows).
He created a total of 19 rows of trees.

Note: There should be more than 2 trees to count as a row.

What is the minimum number of trees required by the gardener to have 19 rows of trees?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

What do you answer even though it never asks you questions?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

10+10 and 11+11 can give you the same answer.

Explain how?