(987 + 13)(6 + 4) x 2 x 5 = 1000 x 10 x 10 = 100000
24680
24
4p3*3p1 equal to 72 ways
10 x 9 x 8 = 720.
60
24680
93,876
24
4p3*3p1 equal to 72 ways
0 you can only have 3 layers since you have only 3 numbers so without repeating you would only have 3 layers
There are 840 4-digit combinations without repeating any digit in the combinations.
10 x 9 x 8 = 720.
To make 20 using 6 numbers without repeating them, you can use the following equation: (5 + 4) x (3 + 2) - 1 = 20. This equation utilizes the numbers 5, 4, 3, 2, and 1 without repeating any of them to reach the target number of 20. By strategically combining these numbers using addition, multiplication, and subtraction, you can achieve the desired result.
60
502 205 250 520 4 numbers. If a leading zero is allowed then you can have 052 and 025 for 6 numbers.
468, 486, 648, 684, 846, 864.
1124 1224 1244