On page 69 of the second grade of primary school mathematics, there are two beads, three blue ones, and so on. Question 24: What color are the beads?
Two blue and three red, that is to say, every five beads form a circle. So you can use 24÷5 to figure out how many there are in the whole group, and then see how many are left, and then see what color the last bead is.
24÷5 = 4 ^ 4(a)
Two blue and three red, so the third one is red, so the fourth one must be red.
A: The 24th bead is red.
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