What word begins and ends with an E, but has only one letter?

Two Twins Jack and Jill were standing back to back and suddenly they started running in opposite direction for 4 kilometres and then turn to left and run for another 3 kilometres.

what is the distance between the Baggio twins when they stop ?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

Which word does the below Plexor means ?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

What is the centre of gravity?

what does the below rebus means?