2 乘法 21 等于多少？

2 × 20 = 40 2 × 22 = 44 2 × 19 = 38 2 × 23 = 46 2 × 24 = 48 2 × 18 = 36 2 × 25 = 50 2 × 17 = 34 1 × 21 = 21 3 × 21 = 63 4 × 21 = 84 5 × 21 = 105 6 × 21 = 126 7 × 21 = 147 8 × 21 = 168 9 × 21 = 189 1 × 42 = 42 3 × 14 = 42 6 × 7 = 42 7 × 6 = 42 14 × 3 = 42 21 × 2 = 42 80 × 100 = 8000 9 × 47 = 423 57 × 21 = 1197 63 × 21 = 1323 61 × 51 = 3111 47 × 92 = 4324 86 - 44 = 42 3 + 39 = 42