How do you make 21 using 1234?

Answer 1

To make 21 using the digits 1, 2, 3, and 4, you can use the equation ( 4 \times 3 + 2 - 1 = 21 ). First, multiply 4 and 3 to get 12, then add 2 to get 14, and finally subtract 1 to arrive at 21.