Can you make this maths quizz?

Number riddles have certain benefits not only for our brain activity but also for our mental health. By doing math exercises, you may slow down memory loss and other mental problems, like dementia, in the future. Plus, if you solve these riddles with family members, friends, or coworkers, it may improve your teamwork skills.

Now take a look at this maths quizz!

The correct answer is