Question

Is the number rational or irrational?
Column A Column B
1. A. rational
square root of 81 (A or B) B. irrational
2.
square root of 84 (A or B)
3.
square root of 128 (A or B)
4.
square root of 400 (A or B)

Answer 1

i know this ^.^

Answer 2

1 --> A
2 --> B
3 --> B
4 --> A

Answer 3

wingspan * -.- @sourav_aich

Answer 4

sorry??