Write fraction into decimal

2 3 over 5

2.2
2.4
2.6
2.5

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

This question awards 100 ! i really don’t want to fail i will also mark you !

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.