Two problems

1)Find the pattern: In the sequence 110, 20, 12, 11, x, 6, y, z, . . . . What is the pattern, and what are
x, y, z?

2)√z means sqrt in the following, prove that

Given that x, y, z ≥ 0, x + y + z = 3, show that √x + √y + √z ≥ xy + yz + zx.