Why is 6 afraid of 7?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

By using 'because' continuously three times, can you make an English statement ?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?