Choose random brick from a :GetChildren() function?

So I want a meteor strike at one of the bricks inside a folder. Then I used a for i,v in pairs loop and a :GetChildren() function, it kinda works. But, I lands in the order the I placed the positions, and not a random. Yes I know in pairs loops go in order, but how can I make it land at a random place? Thanks!

My script so far:

explosion = game.Workspace.Explosions:GetChildren()

for i,v  in pairs(explosion) do

	local part = Instance.new("Part")
	part.Shape = "Ball"
	part.Size = Vector3.new(10,10,10)
	part.BrickColor = BrickColor.new("Burnt Sienna")
	part.Position = Vector3.new(v.Position.X,v.Position.Y+200,v.Position.Z)
	part.Parent = game.Workspace
	wait(1.8)
	local exp = Instance.new("Explosion")
	exp.Parent = game.Workspace
	exp.BlastPressure = 40
	exp.BlastRadius = 120 
	exp.Position = part.Position
	wait(2)
	part:Destroy()
	
end

GetChildren() returns a table of the children within the instance that you call the method on. So, to select a random item from this table, you can generate a random number between 1 and the length of the table. You can then index the table with this number to get your random part. For example:

local Explosions = workspace.Explosions:GetChildren()
local ExplosionNumber = math.random(1,#Explosions)
local ChosenExplosion = Explosions[ExplosionNumber]
print(ChosenExplosion,"was chosen")

To make the random number generation different every time, you can add this line at the top of the script too:

math.randomseed(tick())

Hope this helps!