How can you take 2 from 5 and leave 4?

It can be easily calculated that the digits 0 to 9 can be arranged into 3628800 distinct ten-digit numbers.

But do you know how many of these numbers are prime?

I have no life, but I can die. What am I?

Too much grey makes things difficult. However, your task here is to find the elephant hidden in the picture.

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

Sharpest vision can find the lamp in the desert. Are you one of them? Test your observation skills now!

Readers with the highest levels of visual skills can find three differences between the pictures of a lion on a scooter. Test your visual prowess now!

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Before Mount Everest was discovered, what was the highest mountain in the world?