Can you fill the blank with the correct number?

6 30 870 756030 _____

If 1+9+8=1, what is 2+8+9?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Bobby and Wilbur decided to take their respective car out of the garage and race. None of them cheated and they both stood at the start time and decided to cover a distance in full throttle. The first to reach the mark was to be declared the winner.

Upon reaching the finishing mark, they found out that Bobby's car was 1.2 times faster than Wilbur's. Now, Wilbur had reached the mark about 1 minute and 30 seconds later than Bobby. Bobby's car reached the mark of 60 MPH on average.

Can you calculate the distance between the starting mark and the final mark with the help of the given data?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

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?

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

What is the largest number you can write with just 3 digits?