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 96 × 58 = 5568 49 × 22 = 1078 60 × 95 = 5700 68 × 52 = 3536 31 × 54 = 1674 77 × 51 = 3927 95 - 53 = 42 81 - 39 = 42