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Numbers
Numbers are our way to quantify, label, and organize the world around us in a logical manner. However, the systems used to obtain this goal differ geographically, historically, and by relative utility. All questions pertaining to numbers, including historic labeling systems, bases of numerical systems, constants, and the various ways they're grouped together, should be placed into this category.
46,867 Questions
NO. 789645 is not a prime number because it ends in 5 which means that its other factor aside from 1 and itself is 5.
What is the date in the summerhas 30 days in month on fifth Saturday is a prime number?
The answer depends on the country in question and the year. In countries in South Asia it could be 29 or 30 April or June, which are considered to be Summer months. In Europe or North America it could be 29 or 30 June or September. In the Southern hemisphere, the Summer months will be November to February.
What is another way of saying whole number?
For some people, "natural number." That means the counting numbers, positive integers.
How were prime numbers formed?
A prime number is the product of no other number except 1 and the number itself.
17 is a prime number because it has only two factors which are itself and one
-74 is not an irrational number.
An irrational number can not be represented in the form of a faction.
How can you improve your kids in math?
Practice is the best way to get kids improve in math. Practice can take place anywhere and anytime. When you are with your child in the car, supermarket or even in the park, always ask your kids math questions. In the car, for example, I would ask my kids how long would it take us to get to your grandmother's house if I maintain 50 M/H speed and the distance is 75 miles. In the supermarket, I would ask them how many cans of beans can we buy if we would like to spend 7 dollars and the can price is 80 cents…etc. Such questions would serve two purposes; one it will teach kids the importance of math in life. Second, it will force your kid to use addition, multiplication, subtraction and division and that by itself the best way to learn. The good thing about this approach is that, as a parent, you don't have to schedule time for it or even take time from your daily schedule to practice math with your kids. It will happen naturally and before you know it, your kids are loving it.
Another source of practice is the computer and Internet. The Internet is full now a days with website that provide games that teach math, just yahoo the subject and you will know what I mean. If your child is like mine, where it is hard to keep him focus while linked to the Internet, then you can easily download one of these games or software on your machine. This way, your child can do his practice without being on the Internet and without being distracted by a flashy advertisement. My child is using a software that I found so helpful. You can even get the software for free and not pay for it unless you see that your child had benefited from it. The software cost less than 10 bucks and the best thing is that I can leave my child on the computer practicing his math without my full supervision. I'm sure that there are many of such software that you can download that do the same thing.
Just for those who might be interested, my child uses OurFlashcards software, I linked their website below.
What are binary numbers and what is their relation to numbers we are familiar with?
We count in base 10. Starting with a single digit, or place value, we count out 10 digits (zero to nine), then add an additional place value on the left (making 10), and count through zero through nine again (10-19) until we have 20.
Binary numbers, however, are base 2. Instead of counting all the way to 10 in one decimal place, they only count zero to one before moving to the next place. Here's how it works for the first few binary numbers:
000: You start with zero.
001: You count to one, just like in the base ten system.
010: You count to two, but since a place value can only handle one or zero, it "overflows" into the next place value.
011: You start counting in the first place value again...
100: It overflows into the second place value again, but this time the second place value is also full, so it moves to the third place value. This is worth 4 in base 10.
This pattern continues on, with 101 (5), 110, (6), 111 (7), 1000 (8), and so on.
First Pattern: Notice that with every step, the first place value turns "on" (1) or "off" (0), following the pattern 0, 1, 0, 1, 0, 1...
With every two steps, the second place value turns "on" or "off", so it follows the pattern 0, 0, 1, 1, 0, 0, 1, 1...
With every four steps, the third place value turns "on" or "off", following the pattern 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0...
Do you see the pattern?
Second Pattern: There is one more thing you may notice about binary: Each place value is worth a power of 2. So...
First place value: Worth 0 when zero, and 1 when one
Second place value: Worth 0 when zero, and 2 when one
Third place value: Worth 4 when one
Fourth place value: Worth 8 when one
Fifth place value: Worth 16 when one
Sixth place value: Worth 32 when one...
And so on.
Example:
You want to find the "normal" (base 10) value of 11010.
A simple way to do so is to add the value of each place value that is "on". The first place is worth 1, but it is off. The second place is on, and worth 2, so add 2. The third place is off. The fourth place is on, so add 8. The fifth, and last place, is on, so add 16. You now have 2+8+16 = 26. So, 11010 is worth 26 in base 10.
What numbers are prime that is between 500 1000?
503 509 521 523 541 547 557 563 569 571 577 587 593 599 601 607 613 617 619 631 641 643 647 653 659 661 673 677 683 691 701 709 719 727 733 739 743 751 757 761 769 773 787 797 809 811 821 823 827 829 839 853 857 859 863 877 881 883 887 907 911 919 929 937 941 947 953 967 971 977 983 991 997.
No, it is not a prime number. The factors of 999,997 are: 1 757 1,321 999,997
How many zeros are there in 1 million Aust?
Aust is a small village in England and there is only one of them - not 1 million!
What it an example of an irrational number?
Pi.
People often use the approximation 22/7; this is rational.
