Three students are sitting in the first row. In the second row, three students sit behind each of those students, and so on. How

Question

3 years ago

11

many students are sitting in the fifth row?
Sorry I just don’t get it

1 answer:

uranmaximum [27] · Answer 1 · 2022-05-20T21:29:13+03:00

Answer:

243 students

Step-by-step explanation:

First row: 3 students

Second row: 9 students (3^2)

Third row: 27 students (3^3)

Fourth row: 81 students (3^4)

Fifth row: 243 students (3^5)

The basic logic behind this question is that each row is a "cube" --> the fifth row is 3 ^5, meaning 3 x 3 x 3 x 3 x 3 (equals 243!!)

Knowing this, you could even solve for how many kids are in, say, the 12th row. It would just be 3^12.