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Solution: 10÷45≈22.2% likes black.

1, which means that most people in our class like blue are 14, and no one likes yellow and orange.

Because most people in our class are of the same age, the difference is 2-3 years at most, that is to say, most people in our class like blue or purple or green, and few people like yellow and orange.

3. There are 3 people who like red, 10 for green, 14 for blue, 1 0 for purple, 2 for white, 5 for black,1person for brown and pink.

Those who like red account for 3 ÷ 45 ≈ 6.7%; Like green accounted for 10÷45≈22.2%.

14 ÷ 45 ≈ 31.1%; Like purple accounted for 1 1÷45≈22.4%.

Like white accounted for 2 ÷ 45 ≈ 4.4%; Like black accounts for 5 ÷ 45 ≈11.1%.

Like brown1.445 ≈ 2.2%; 2÷45≈4.4% like pink.

It can be roughly explained that other students in the same grade, or most students in the same grade, like almost the same color as this class.