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How many whole numbers greater than 0 and less than 100 are divisible by 3?
Thirty-three
Why are not all odd numbers greater than 3 are prime numbers?
Because many of them are divisible by smaller odd numbers. For example 35 is divisible by 5 and so 35 cannot be a prime number.
How many 5 digit numbers under 20000 are divisible by 4 and 9?
There are 278 5-digit numbers less than 20,000 that are divisible by both four and nine.
How many composite numbers are greater than forty but less than fifty?
Five.
How many composite numbers are greater than 25 but less than 50?
There are 18.
How many whole numbers greater than 0 and less than 100 are divisible by 2?
49
How many whole numbers are greater than 0 but less than 50 are divisible by 2?
49
How many whole numbers greater than 0 and less than 100 are divisible by 3?
Thirty-three
How many whole numbers greater than 0 and less than 100 are divisible by 5?
Nineteen. They are: 5101520253035404550556065707580859095
How many whole numbers greater than 9 and less than 999 are divisible by 9?
109
How many numbers less than 700 are divisible by both 15 and 21?
How many numbers less than 700 are divisible by both 15 and 21?
How many numbers less than 1000 are divisible by 3 and 4?
There are 83 numbers less than 1,000 that are divisible by both three and four.
How many numbers less than 100000000000000 are not divisible by 4?
75,000,000,000 of them.
How many numbers less than 1000 are divisible by 3?
333 of them.
How many odd numbers less than 100 are divisible by 3?
17 odd numbers.
How many whole numbers less than 50 are divisible by 5 or 7 but not both?
14. Assuming dealing with only counting numbers (ie integers greater than 0): Numbers divisible by 5 or 7 are their multiples. 50 ÷ 5 = 10 → last multiple of 5 less than 50 is 9 x 5 → 9 numbers less than 50 are divisible by 5 50 ÷ 7 = 71/7 → last multiple of 7 less than 50 is 7 x 7 → 7 numbers less than 50 are divisible by 7 Numbers divisible by both are those which are multiples of their lowest common multiple = 35 50 ÷ 35 = 115/35 → last multiple of 35 less than 50 is 1 x 35 → 1 number less than 50 is divisible by both 5 and 7 and needs to be removed from both the above counts. → (9 - 1) + (7 - 1) = 14 numbers less than 50 are divisible by 5 or 7 but not both. If there is no restriction on numbers being greater than 0, there are infinitely many numbers as it includes the infinite number of negative numbers which are all less than 50 and provide an infinite number of numbers divisible by 5 or 7 but not both.
The number 64 is divisible by its unit digit 4 How many whole numbers less than 64 are divisible by their unit digit?
18 numbers are there
