Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Take one out and scratch my head, I am now black but once was red. What am I?

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

I have feet, but no legs. Which animal Am I?

I am an odd number. Take away a letter and I become even. What number am I?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Replace the question mark with the correct number in the below-given picture?

I ask Joseph to pick any 5 cards out of a deck with no Jokers.

He can inspect then shuffle the deck before picking any five cards. He picks out 5 cards then hands them to me (Jack can't see any of this). I look at the cards and I pick 1 card out and give it back to Joseph. I then arrange the other four cards in a special way, and give those 4 cards all face down, and in a neat pile, to Jack.

Jack looks at the 4 cards i gave him, and says out loud which card Joseph is holding (suit and number). How?

The solution uses pure logic, not sleight of hand. All Jack needs to know is the order of the cards and what is on their face, nothing more.

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?