write down a number whose values lie between 5.4 and 5.5

Answer 1

Think of these numbers as money.

5.4 = $5.40 = five dollars and forty cents

5.41, 5.42, etc.

Answer 2

Harry makes up a sequence. The first number is 6 and each number after that is 3 more than twice the previous number. What will the fourth number be in the sequence?