What has 13 hearts but no other organs?

The dirtier I get, the whiter I look. Who am I?

When is the top of a mountain similar to a savings account?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

What does below Rebus mean ?

esgg sgeg gegs gsge

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

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 have feet, but no legs. Which animal Am I?

why number 8549176320 is one of a kind?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?