Whakaoti i te 13!/(13-5)!5!

$$\frac { 13 ! } { ( 13 - 5 ) ! 5 ! }$$

Aromātai

$$1287$$

Ngā Upane Otinga

Ko te huarea o 13 ko 6227020800.

$$\frac{6227020800}{\left(13-5\right)!\times 5!}$$

Tangohia te 5 i te 13, ka 8.

$$\frac{6227020800}{8!\times 5!}$$

Ko te huarea o 8 ko 40320.

$$\frac{6227020800}{40320\times 5!}$$

Ko te huarea o 5 ko 120.

$$\frac{6227020800}{40320\times 120}$$

Whakareatia te 40320 ki te 120, ka 4838400.

$$\frac{6227020800}{4838400}$$

Whakawehea te 6227020800 ki te 4838400, kia riro ko 1287.

$$1287$$

Tauwehe

$$3^{2}\times 11\times 13$$