50 reward - 7 is rational number, integer, fraction, positive integer, negative fraction, natural number which? -Which are rational numbers, integers, fractions, positive integers, negative fractions, natural numbers? - 3.14? 0? 2 / 3?

RELATED INFORMATIONS

• 1. From the natural number, as well as rational number, please define the relationship between the size
• 2. If - A is not negative, then a must be () A. Negative B. positive C. positive and zero D. negative and zero
• 3. If a is a rational number, the following statement is correct: a. a must be a positive number B. - a must be a negative number C. A must not be 0 d. A may be 0
• 4. If a is a rational number, then in the following sentences: ① - A is a negative number; ② A2 is a positive number; ③ the reciprocal of a is 1A; ④ the absolute value of a is a. where () A. 1 B. 2 C. 3 d. 4
• 5. We know that there is no number whose square is negative in the range of rational numbers. Now let's make a sharp intellectual turn. Suppose that the square of a number I is exactly equal to - 1. Under this assumption, complete the following questions: I + I ^ 2 + I ^ 3 + I ^ 4 = I + I ^ 2 + I ^ 3 + I ^ 4 +... + I ^ 2012=
• 6. Is there a rational number whose square is negative 9 Be specific
• 7. It is proved that LIM (x approaches 1) x ^ 2-1 / x ^ 2-x = 2
• 8. LIM ((1 + x) ^ (1 / x) / E)) ^ (1 / x) x tends to 0
• 9. LIM (x is close to 0) (x * [1 / x]) =?
• 10. Find the limit LIM (sinxy) / y X - > a Y - > 0
• 11. Rational arrays make 24 There are four rational numbers: 3,4, - 6,10. Add, subtract, multiply and divide these four numbers (each number is used only once) so that the result is 24. Write three kinds of essentially different formulas
• 12. What are the numbers in rational numbers
• 13. Write three rational numbers to satisfy the following conditions: ① is a negative number; ② is an integer; ③ can be divided by 2, 3, 5______ ．
• 14. Write five rational numbers that satisfy the following three conditions at the same time: (1) three of them are non negative; (2) three of them are non positive; (3) three of them are integers
• 15. Given that the square of | a + 1 | + (B-1) = 0, n is a positive integer, then the square of a + 2N-1 of B=
• 16. The congruence equation solution of n ^ 2 + N + 24 divisible by 2010
• 17. If n is a positive integer, then 3 (n + 2) - 3 (n) can be divided by 24
• 18. If the square difference of two consecutive odd numbers can always be divided by K, then K is equal to () A. Multiple of 4B. 8C. 4 or - 4D. 8
• 19. If n is any integer, the value of (n + 11) 2-n2 can always be divided by K, then K is equal to () A. Multiple of 11b. 22c. 11 or 12D. 11
• 20. It is proved by factorization that 257-512 can be divided by 120