21 乘法 72 等于多少？

21 × 71 = 1491 21 × 73 = 1533 21 × 74 = 1554 21 × 70 = 1470 21 × 75 = 1575 21 × 69 = 1449 21 × 76 = 1596 21 × 68 = 1428 20 × 72 = 1440 22 × 72 = 1584 19 × 72 = 1368 23 × 72 = 1656 24 × 72 = 1728 18 × 72 = 1296 25 × 72 = 1800 17 × 72 = 1224 18 × 84 = 1512 24 × 63 = 1512 27 × 56 = 1512 28 × 54 = 1512 36 × 42 = 1512 42 × 36 = 1512 29 × 31 = 899 89 × 69 = 6141 79 × 1 = 79 13 × 63 = 819 38 × 60 = 2280 90 × 10 = 900 27 × 1 = 27 37 × 68 = 2516