What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

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

What brings you down but never up?

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

True Or False?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain