Mga plan

Permutation at Combination Calculator

Ilagay ang n (mga item na pagpipilian) at r (mga item na pinili).

Resulta

Ilagay ang mga halaga at pindutin ang “Kuwentahin” para makita ang resulta.

Formula

nPr=n!(n−r)!{}_nP_r = \frac{n!}{(n - r)!}

Permutations: order matters.

nCr=n!r! (n−r)!{}_nC_r = \frac{n!}{r!\,(n - r)!}

Combinations: order does not matter.

Paano gamitin ang calculator na ito

  1. Enter whole numbers with r no bigger than n.
  2. Press Calculate to get both counts.

Halimbawang may solusyon

Choose 2 from 5

5P2 = 5 × 4 = 20 ordered arrangements.

5C2 = 20 / 2! = 10 unordered selections.

Mga madalas itanong

When does order matter?

For rankings or codes (permutations). For teams or hands of cards, order doesn’t matter (combinations).

Are the answers exact?

Yes — even very large counts are computed exactly.

Alamin pa