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maths
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Number between 22 and 32 has more than 4 factors it results in a prime number when it s digits are added?
30
It is between 44 and 53 and the sum of its digits is prime and it has more than 3 factors what is a number that fits?
50
Why is 87 not a prime number?
Sum of the digits of 87 = 8+7 =15(a multiple of 3) which means that 87 is divisible by 3. Therefore, 87 is not a prime number as it has more than two factors which are 1, 87, 3 etc. In order to prove that a given number is prime we shall show that the given number has more than two factors. There is no need to find all the factors.
What features does a number have if the number is prime?
Here are some:It has only 1 and itself as unique factors. (They cannot be the same.)It ends (if 2 or more digits long) with the digits 1, 3, 7 or 9 only.
How do you find out if a number is a prime or composite number?
Find the factors of the number. If the only factors are 1 and itself, it is prime.A prime number is a positive integer with two factors: one and the number itself.A composite number is a positive integer with more than two factors.
Is this pi 3.14x2?
No, pi is an irrational number that has an infinite amount of digits, it starts out with 3.14159265358979323846264338327 That is to only 30 digits, but you can find more if you Google 'pi'.
How many significant digits in 500.95?
To assess the number of significant digits in a number, you first have to find the greatest non-zero digit. In this case it is the first five which represent 500. The next step is to simply count how many digits there are after this number. In this case, there are 4 more digits. Thus the number 500.95 has been given to 5 significant digits.
Which is greater of two positive numbers?
It's the number that has more digits to the left of the decimal point (if there is no decimal point, it's the number with more digits). If the number of digits to the left of the decimal point is the same, find the position farthest to the left where the digits are different. The number with the greater of those two digits is the greater number. For example, 10000 is greater than 9999 because 10000 has more digits, and 6350 is greater than 6349 because the farthest-left position that is different is the tens place, and 5 is greater than 4.
Which is greater the greatest whole number with 5 digits or the least whole number with 6 digits?
The least whole number with 6 digits is greater because it has more digits than 5 digits.
How do you find out if a number is multiple of 4?
If last two digits of a number are divisible by 4 then number is a multiple of 4 for a number with more than 21 digit
How can you tell if a number is a prime or composite number?
well first off all even numbers are composite (except 2). you can fist off tell if a number can be divided by three by adding up its digits such as 423. We know that 3 can go into this because the digits add up to 423. please take third grade again to learn the rest of the rueles
Would you rather find all the factors of a number or find all the prime factors of a number?
Once all the prime factors of a number have been found, the number of factors the number has and what they are can be found. I'd be finding the prime factors first before finding all the factors of a number, so I'd rather find all the prime factors as it means I can stop before I have to do more work in finding all the factors.
