If a is an even number, then the two even numbers adjacent to it are_____ And_____ The sum of two odd numbers adjacent to it is______

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• 1. The difference between an even number and an odd number is () A. odd number B. even number 0C
• 2. The sum of the squares of two odd numbers equals the square of an even number Please help me find two odd numbers so that the sum of their squares can be equal to the square of an even number
• 3. Use description method to express the solution set of the following set inequality with odd number, positive even number, x square + 1 less than or equal to 0 A set of few odd numbers
• 4. Odd times even equals? Who knows. Know How to prove it
• 5. Sum of squares of even numbers within 100
• 6. The calculation formula of the sum of the first n even numbers
• 7. Even term sum formula, odd term sum formula of arithmetic sequence Push to add result
• 8. If we know that the sum of odd terms of an arithmetic sequence with even terms is 51, the sum of even terms is 60, and the first term is 1, then the general term formula is
• 9. In triangle ABC, BD = CE, DF = EF, ab = AC
• 10. High school mathematics compulsory one of all the explanation? Thank you~
• 11. The difference between the reciprocal of two consecutive even numbers is 1 / 40. How many are the two consecutive odd numbers?
• 12. The sum of two odd numbers must be even
• 13. The difference between the reciprocal of two consecutive even numbers is one in 40. What are the two consecutive odd numbers?
• 14. What is the sum formula of factorial?
• 15. Sum 1 / 2! + 2 / 3! + N / (n + 1)! Sit and wait
• 16. Summation of factorial sequence 1/2!+2/3!+3/4!+… +N / (n + 1)! What is it?
• 17. What is the negative square of five? Don't quite understand
• 18. The square of junior high school mathematics from 1 to 30 For example, the square of 12 is 144
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• 20. What is the negative square of 1