The correct phrase is "Es macht keinen Sinn." The addition of "Es macht" (It makes) clarifies that the senselessness is being attributed to something specific. Without "Es macht," the phrase "keinen Sinn" would be more general and could refer to a variety of things. **

The correct phrase is "Das ergibt keinen Sinn." This phrase is used to express that something doesn't make sense or doesn't add up. It is a common expression in German to convey confusion or disbelief about a situation or statement. **

Both "Das hat keinen Sinn" and "Das macht keinen Sinn" are commonly used in German to express that something doesn't make sense. However, "Das macht keinen Sinn" is more commonly used in spoken language, while "Das hat keinen Sinn" is more formal and less frequently used in everyday conversation. Both phrases convey the same meaning and can be used interchangeably depending on the context. **

"Das ergibt keinen Sinn" means "That doesn't make sense" and is used when referring to a situation, explanation, or argument that is illogical or nonsensical. On the other hand, "Das macht keinen Sinn" also means "That doesn't make sense" but is used when referring to an action or decision that is not logical or reasonable. In essence, the difference lies in the context in which the phrases are used, with "ergibt" referring to a situation or explanation, and "macht" referring to an action or decision. **

"Keinen" is the accusative form of "kein" and is used when the noun is masculine or neuter. For example, "Ich habe keinen Hund" (I don't have a dog). "Keinem" is the dative form of "kein" and is used when the noun is masculine or neuter. For example, "Ich gebe dem Hund kein Futter" (I don't give food to the dog). To write "keinen" or "keinem" correctly, you need to pay attention to the gender and case of the noun that follows it. **

The phrase "damit habe ich keinen Klemmer" is a German expression that roughly translates to "I have no problem with that" or "that's not an issue for me." The word "Klemmer" can be interpreted as "problem" or "difficulty," so the phrase conveys a sense of ease or lack of concern about a particular situation. It is often used to indicate that someone is not bothered by a certain issue or that they are not experiencing any trouble with it. **

No, "Ist sich keinen Kopf darüber machen" is not slang. It is a formal German expression that translates to "don't worry about it" or "don't bother about it" in English. This phrase is used in formal and informal settings and is not considered slang. **

The correct form is "kein" when used before a masculine or neuter noun in the nominative or accusative case. For example, "Ich habe kein Auto" (I don't have a car) or "Er hat kein Geld" (He doesn't have any money). The correct form is "keinen" when used before a masculine noun in the accusative case. For example, "Ich sehe keinen Mann" (I don't see a man). **