There are 10 charcoal tablets in each packet.
They're very easy to light.
I use a long grill lighter and light the edge after placing it in a metal incense burner.
Place it with the depression facing up
Once the charcoal is lit, it will sparkle accross the top.
Then place a few pieces of incense resin on the depression.
It is best to light the charcoal in a well ventilated area.