Jawab:

ganjil × genap

n+1 × n = n(n+1)

1 × 0 = 0  -->  0+1 × 0 = 0(0+1) = 0 + 0 = 0

3 × 2 = 6 -->  2+1 × 2 = 2(2+1) = 2(2) + 2(1) = 4 + 2 = 6

5 × 4 = 20 -->  4+1 × 4 = 4(4+1) = 4(4) + 4(1) = 16 + 4 = 20

7 × 6 = 42 -->  6+1 × 6 = 6(6+1) = 6(6) + 6(1) = 36 + 6 = 42

9 × 8 = 72 -->  8+1 × 8 = 8(8+1) = 8(8) + 8(1) = 64 + 8 = 72

11 × 10 = 110 -->  10+1 × 10 = 10(10+1) = 10(10) + 10(1) = 100 + 10 = 110

Contohnya kurang lebih begitu

Kalau genap × genap = n²

2² = 4, 4² = 16, 6² = 36, 8² = 64 dst

<(7o7)>