Let n be a natural number, and use the algebraic expression containing n to express: 1. Three consecutive integers; 2. Two adjacent even numbers; 3. Two adjacent odd numbers

Let n be a natural number, and use the algebraic expression containing n to express: 1. Three consecutive integers; 2. Two adjacent even numbers; 3. Two adjacent odd numbers

1.(n+1)(n+2)(n+3)
2.（2n）（2n+2）
3.（2n-1)(2n+1）

I am the product of the smallest prime number and the smallest composite number. Who am I?

According to the meaning of prime number and composite number, the smallest prime number is 2, and the smallest composite number is 4. Then their product is 2 × 4 = 8

In non-zero natural numbers, the smallest even number is () and the smallest odd number ()

In nonzero natural numbers, the smallest even number is (2), the smallest odd number is (1)