13!/(13-5)!5! eching

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

Baholash

$$1287$$

Yechim qadamlari

13 ning faktoriali 6227020800 ga teng.

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

8 olish uchun 13 dan 5 ni ayirish.

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

8 ning faktoriali 40320 ga teng.

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

5 ning faktoriali 120 ga teng.

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

4838400 hosil qilish uchun 40320 va 120 ni ko'paytirish.

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

1287 ni olish uchun 6227020800 ni 4838400 ga bo‘ling.

$$1287$$

Omil

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