As far as I know theres 12, but some contain more colours aswell as red, black and white
There are 192 national flags
none
Many flags of all kinds, from national ones to local ones do have text on them. There is nothing wrong with that.
Israel has one national flag, but a number of different military ensigns and local city or regional flags.
5
The first flags were made to help coordinate military maneuvers on battlefields. They are still used for many signaling operations. National flags are designed to boost pride and patriotism.
The colour can represent a great many things where it is used. It is a frequent colour in Middle Eastern national flags, representing Islam, and on African flags from the Pan-African Flag (which is red, black and green). Green may also represent forests or natural wealth, as on the Brazilian and Indian flags.
Mexico has had three national flags since the moment it became independent from Spain; however it had many other flags during its War of Independence: from the "Lady of Guadalupe" banner Miguel Hidalgo used on his cry for independence, to the Three Guarantees Army flag that was used as model to the modern national flags.
Many national flags exhibit symmetry, either through bilateral (left-right) or rotational symmetry. While the exact number can vary as new flags are adopted and old ones are modified, it is estimated that around two-thirds of the world's national flags display some form of symmetry. Examples include flags like those of Japan, the United States, and Canada, which showcase clear symmetrical designs.
Just one , i.e. Nepal's. As far as I know.
Which flag? Many flags contain stars, you need to specify which one you're referring to!!
i think many would agree, hence their flags colors, turkeys national color would be red and white.