Escribe en numeros naturales el significado de los numeros romanos? cxv : cmxix : xcv : ayudaa

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?

Pls brainliest will be awarded if answer is correct

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal