Question

Pens are sold singly or in packages of 2 or 6. With this packaging, how many ways can you buy 10 pens?

Answer 1

Răspuns

Explicație pas cu pas:

5 x 2

2 x 2 + 1 x 6

Answer 2

Răspuns

Explicație pas cu pas:

2+2+6 = 10  ⇒ 2 packs of 2 + 1 pack of 6

                   ⇒ 2  pack of 2 + 6 singly

                   ⇒ 2 singly + 1  pack of 2 + 1 pack of 6

5 x 2 =10  ⇒ 5 packs of 2

10 x 1 = 10  ⇒ 10 singly

2 +8 = 10  ⇒ 1 pack of 2 + 8 singly

4 + 6 = 10  ⇒ 4 singly + 1  pack of 6

⇒  7 ways