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

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Prove that the below maths equation is true.

8 + 8 = 91

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

When we see 2 but call 10?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?