Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

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

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

You need to remove two matchsticks to make the below equation true. Can you do it ?

Which is faster, Heat or Cold ? Explain.

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

If your uncle’s sister is not your aunt, what relation is she to you?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

what's the probability of getting a king or a queen from a pack of 52 cards?