Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

Can you move 2 matchsticks to form four equal sized squares.

Can you find a five letter word that is left with only two letters if one is removed?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?