1. You will have to go there, won't you?

2. You must solve the problem, mustn't you?
3. You shall leave for the city, shan't you?
4. Jacob had better go there, hadn't he?
5. Emily should have come earlier, shouldn't she?
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Are the tag questionsl all grammatical?

2 answers

Not all only 1 4 5
2 and 3 are correct in British English, but not used in American English.

All the others are fine.