Question

Yang nomor 2, mohon bantuannya

Answer 1

1)
11.10.9.8.7!
--------------- =11.10.9.8=7920
7!

soal nmr 2 aq kurang paham..mungkin soal yg dibuku cetakny bisa di post

Answer 2

(3 x 4)! /(3!.3!.3!.3!) = 12!/(3.2.1.3.2.1.3.2.1.3.2.1)
= 12!/(3.2.1.6.6.6)
= 12!/(3.2.1.36.6)
= 12!/(3.2.1.4.9.6) x (5/5)
= 12!.5 / (6.5.4.3.2.1.9)
= 12!.5 / 6!.9 x (8!/8!)
= 12! . 8! . 5 / 6! . 9! ....... B