Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

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?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What does man love more than life, hate more than death or mortal strife; That which contented men desire; the poor have, the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

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

Which digit occurred maximum times between the number 1 and 1000?

Can you find out the number that should replace the question mark with a valid reason?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?