What has one letter and starts with an E?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

When it's bad luck to meet a black cat?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?