Please provide me the solution of math geometry from exercise 11.2​

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?