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How many positive square numbers less than 50?
positive square numbers less than 50 are 7 these are : 1,4,9,16,25,36,49.These are less than 50.
What are odd multiples of 7 less than fifty 50?
Odd multiples of 7 less than 50 are numbers that are both odd and divisible by 7, and are less than 50. The odd multiples of 7 less than 50 are 7, 21, and 35. These numbers are odd because they are not divisible by 2, and they are multiples of 7 because they can be divided evenly by 7.
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.
What is the probability that a prime number is less than 7 given that it is less than 13?
2, 3, 5, 7, 9, 11 are the six prime numbers less than 13, Three of these are less than seven. So, the probability that a randomly chosen prime number less than thirteen is less than seven is 3 divided by 6 or 0.5. Said another way the odds are 50/50.
A number less than 50 but is a multiple of 3 and 7?
Both 21 and 42 will work. ■
