Using the digits 1 to 9 (each exactly once), form three 3- digit numbers so that the second number is 2 times the first and the third number is 3 times the first.?​

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .