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If the product of five rational numbers is negative, then the number of positive factors of the five rational numbers is () A.0 or 2 B.1 or 3 C.0 or 2 or 4 D.1 or 3 or 5
The product of five rational numbers is negative,
The number of negative factors is 1 or 3 or 5,
The number of positive factors is 4 or 2 or 0.
Therefore, C.
A number of rational numbers are multiplied and of which is negative, then the number of negative factors is ______. A number of rational numbers are multiplied, the product of which is the number of negative factors is ______.
According to the multiplication rule of several nonzero rational numbers, when there are odd negative factors, the product is negative.
For example,(-1)×(-2)×(-3)×4=-24, there are three negative factors, the product of which is negative.
RELATED INFORMATIONS
- 1. Several rational numbers are multiplied. When the number of negative factors is odd, the product must be negative. Several rational numbers are multiplied. When the product is negative, the number of negative factors is odd. Are these two sentences right?
- 2. If 5 rational numbers are multiplied and their product is negative, then the negative factor is.
- 3. If the sum of two nonzero rational numbers equals 0, then the absolute value of these two numbers. Symbol (), call these two numbers (). If the sum of two nonzero rational numbers equals equal to 0, then the absolute value of these two numbers. Symbol (), call these two numbers (). This is the empty problem.
- 4. Mathematical Judgment: The sign of the difference between two rational numbers that determines the size of the two numbers.
- 5. Like (5) and +5, only two numbers with different symbols are called Like (5) and +5, only two numbers with different symbols are called.
- 6. The rational number is 24 There are four rational numbers:3,4,-6,10. The four numbers are added, subtracted, multiplied, divided and so on. Rational composition:24 There are four rational numbers:3,4,-6,10. These four numbers are added, subtracted, multiplied, divided and so on.
- 7. A set of numbers is a set of numbers consisting of a number. All rational numbers are called sets of numbers.
- 8. If a is a rational number, then the lower face -a is correct -a is negative -a is positive -a is If a is a rational number, then the bottom face -a is correct - A is negative - a is positive - a is the opposite of a -A is positive or negative If a is a rational number, then the lower face -a is correct -a is negative -a is positive -a is If a is a rational number, then the lower face -a is correct -A is negative -a is positive -a is the opposite of a -A is positive or negative
- 9. Why is the odd power of a negative number a negative number an even power of a negative number a positive number Best example
- 10. (1) Transverse observation: any power of a positive number is a () number; the odd power of a negative number is a negative number, and the even power is a positive number; any power of zero is zero. (1) Horizontal observation: Any power of a positive number is a () number; an odd power of a negative number is a negative number, and an even power is a positive number; any power of zero is zero. (2) Longitudinal observation The odd power of two numbers opposite to each other still (), even power () (3) What is the even power of any number? ( )
- 11. If the even power of a rational number is not a negative number, then the rational number is Please, heroes.
- 12. Any even power of a complex number is a nonnegative real number.
- 13. A positive number is greater than zero and a negative number is less than zero; the number of two negative numbers comparing size () is smaller? Please tell me what's in the brackets,
- 14. What is the difference between a positive number and a negative number
- 15. Zero and positive numbers are collectively referred to as ______ and zero and negative numbers are collectively referred to as ______.
- 16. Zero and positive numbers are collectively referred to as ______ and zero and negative numbers are collectively referred to as ______.
- 17. Judgment:1 rational number includes positive number and negative number.2 positive integer includes zero and natural number.3 positive integer is natural number. I am not very clear about these three judgments. The third question is: is the positive integer a natural number? These questions are from the book I bought. I think the second question is similar to the third question, but the answer is different.(Explain the reason)
- 18. Let a square with an area of 10 have a side length of x. Is x a rational number?
- 19. The concepts of rational numbers and irrational numbers. Also, are some fractions rational numbers and some irrational numbers?
- 20. The Concept of Multiplication and Division of Rational Numbers The absolute value of the multiplier is equal to -?