Article: Prajna (Sanskrit) or panna (Pali) means wisdom that is based on a realization of dependent origination, The Four Noble Truths and the three marks of existence. Prajna is the wisdom that is able to extinguish afflictions and bring about bodhi. It is spoken of as the principal means of attaining nirvana, through its revelation of the true nature of all things as dukkha (unsatisfactoriness), anicca (impermanence) and anatta (not-self). Prajna is also listed as the sixth of the six paramitas of the Mahayana.

Now answer this question: How many Noble Truths are there?
Four