If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

What does this simple rebus mean?

Two friends were stuck in a cottage. They had nothing to do and thus they started playing cards. Suddenly the power went off and Friend 1 inverted the position of 15 cards in the normal deck of 52 cards and shuffled it. Now he asked Friend 2 to divide the cards into two piles (need not be equal) with equal number of cards facing up. The room was quite dark and Friend 2 could not see the cards. He thinks for a while and then divides the cards in two piles.

On checking, the count of cards facing up is same in both the piles. How could Friend 2 have done it ?

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

All Marigolds are flowers.
Few Flowers are used to make colors.
Therefore, some Marigold are used to make colors.

True Or False?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Identify the 10 differences between the two given pictures.

If an electric train is travelling south, then which way is the smoke going?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.