An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

Can you find out the remainder when 3^300 is divided by 5?

What is the next number in the series?

15 29 56 108 208 ?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

What is the Surname of Barbie Doll?