I am an odd number. Take away a letter and I become even. What number am I?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

A blonde put eyeliner on her head. Why?

What is the word or phrase?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

Can you name four days which start with the letter 'T'?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

You need to arrange three 7 and mathematical symbols to form number 1?