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How many even numbers between 1 and 1000?
There are exactly 50 even numbers if you include 100. There are exactly 50 odd numbers if you include 1.
What proportion of the first 1000 natural numbers have a 3 in them?
271
From 1 to 1000 which numbers have a odd number of factors?
There are 31 numbers less than 1,000 which have an odd number of factors. They are: 1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400,441,484,529,576,625,676,729,784,841,900,961.
What proportion of the first 10000 natural numbers contain a 5?
271 of the first 1000 natural numbers contain at least one digit 5. That is 27.1 % of them.
How many natural numbers between 1000 and 1500 inclusive are divisible by 13?
There are 39 natural numbers between 1,000 and 1,500, inclusive, that are divisible by 13.
How many natural numbers less than 1000 have exactly three distinct positive integer divisors?
Prime squares have three factors. There are 11 of them in that range.
How many square numbers are between 1 and 1000 that have five factors?
There are three of them with exactly five factors.
How many prime numbers are in 1000?
The prime numbers (factors) of 1000 are: 2 and 5
How many natural numbers are there in 10 to 1000?
There are 1000 - 9 = 991 of them.
Is 10 a multiple of 1000?
No, 1000 is a multiple of 10. 10 is a factor of 1000. Factors go into numbers, numbers go into multiples.
What is a number that has exactly 1000 factors?
2 to the 999th power
All the prime numbers to 1000?
The prime factors of 1000 are: 2, 5
What are factors of 1000 are prime numbers?
2 and 5
What are the composite numbers 500-1000?
They are the numbers that have more than two factors in them
How many even numbers between 1 and 1000?
There are exactly 50 even numbers if you include 100. There are exactly 50 odd numbers if you include 1.
What are the common factors of 14 and 1000?
The common factors of the two numbers are: 1, 2
What proportion of the first 1000 natural numbers have a 3 in them?
271
