Which Number is the odd one out?

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

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

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?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

How is the moon similar to a dollar?

Can it be possible to build a house that has all its four walls facing towards the South?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?