How to set a number variable in Terraform?

Question

Consider the following variable declaration:

```terraform
variable "instance_count" {
  type = number
  description = "number of instances to create"
}
```

What would be a correct *tfvars* file to feed this variable?

Accepted Answer

```
instance_count = "5" 
```

Accepted Answer

```
instance_count = 5
```

Answer

```
variable "instance_count" = 5 
```

Answer

```
TF_VAR_instance_count = 5
```

Question from the Terraform : certification training test