Consider the sets U=\(x∣ x ≤ 10,x ∈ ^+\), P=\((odd numbers less than 10)\), and Q=\((even numbers less than 11)\).List the sets P and Q. 相关知识点: 试题来源: 解析 P=\(1,3,5,7,9\)Q=\(2,4,6,8,10\) ...
If A is the set of odd positive integers less than 10, and B is the set of prime numbers less than 10, how many members does A⋃ B have? ( ) A. 3 B. 5 C. 6 D. 9 E. 10 相关知识点: 试题来源: 解析 C A=\(1,3,5,7,9\) and B=\(2,3,5,7\). A⋃ B ...
If A is the set of odd positive integers less than 10, and B is the set of prime numbers less than 10, how many positive integers less than 10 are in neither set A nor set B? ( ) A. 1 B. 2 C. 3 D. 4 E. 5 相关知识点: 试题来源: 解析 C A=1,3,5,7,9 and B...
【题目】If A is the set of odd positive integers less than 1o, and B is the set of prime numbers less than 10, how many positive integers less than 1o are in neither set A nor set B? ()A.1B.2C.3D.4E.5 相关知识点:
Examples of odd numbers:51,−543,8765,−97,9, etc. An odd number is always 1 more than (or 1less than) an even number. For example, let us take an even number, 8. The odd number next to it is8+1=9. The odd number before it is8−1=7. ...
1 Let a be the average of all odd prime numbers less than 50. The integer,most close to a is ( )(英汉小字典:average平均值;odd prime numbers奇质数) A.23 B.24 C.25 D.26 2 Let a be the average of all odd prime numbers less than 50. The integer,most close to a is ( )(英...
First 10 Odd Numbers The first ten odd numbers are 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19. Smallest Odd Composite Number The smallest odd composite number is 9. If we start looking at the smallestcomposite numberit is 4, but that is an even number. The next composite number is...
Brent, Cohen, and te Riele proved in 1991 that an odd perfect number N is greater than 10300. We modify their method to obtain N > 101500. We also obtain that N has at least 101 not necessarily distinct prime factors and that its largest component (i.e. divisor pa with p prime) i...
Let a be the average of all odd prime numbers less than 50. The integer.most close to a is ( )(英汉小字典:average平均值,odd prime numbers奇质数) A.23B.24C.25D.26
解析 There are 400 odd numbers between 200 and 1000. and there are 100 multiples of 5 less than 500 (including zero). But the two cases overlap-from 200 to 500 there are 30 odd numbers that are multiples of 5. Hence Total = 400 + 100 - 30 = 470. ...