Brain Game: 1, 2, 3, 4!
Today's mentalfloss.com Brain Game Think Thursday challenge is a bit more involved than most, but it's still easy to play. Just please make sure to read these instructions carefully before tackling it:
Your goal: Make the equation [ 1 2 3 4 ] work by adding some combination of the four basic mathematical symbols + - × / and the equals sign = Important: You cannot change the position of the digits, nor add any digits, symbols, or marks other than some combination of the five mentioned.
TWO CORRECT EXAMPLES:
1 2 = 3 × 4
- 1 + 2 + 3 = 4
With a few minutes' work, in addition to the examples
above, we came up with seven different ways to do it.
Can you find those seven (and/or others)?