You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Find the missing number in the series below

13 -21 34 -55 ? -144

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

A father's child, a mother's child, yet no one's son.

Who am I?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

What makes this number unique: 8,549,176,320?

There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?