Colour the spinner red and blue. Make it so that when the pointer is spun, the probability of landing on blue is 1 in 4.
What is the probability of landing on red?
1 - 1/4 = ?
To determine the probability of landing on red, we first need to understand the total number of equally likely outcomes on the spinner. Since there are two colors, red and blue, and the probability of landing on blue is 1 in 4, we can assume that blue occupies one out of four equal sections on the spinner.
Therefore, the remaining three equal sections must represent the color red. Since each section is equally likely to be landed on, the probability of landing on red would be 3 out of 4.
Hence, the probability of landing on red is 3 in 4, or simply 3/4.