What has one letter and starts with an E?

Identify the meaning hidden in the rebus below.

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

If six children and two dogs were under an umbrella, how come none of them got wet?

What am I?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

What number do you get when you multiply all of the numbers on a telephone's number pad?