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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.
What fraction of all 4 digits natural numbers have a product of their digits that is even?
To find the fraction of 4-digit natural numbers with a product of their digits that is even, we first need to determine the total number of 4-digit natural numbers. There are 9000 such numbers (from 1000 to 9999). Next, we consider the conditions for the product of digits to be even. For a number to have an even product of digits, at least one of the digits must be even. There are 5 even digits (0, 2, 4, 6, 8) and 5 odd digits (1, 3, 5, 7, 9). Therefore, the fraction of 4-digit natural numbers with an even product of digits is 5/10 * 9/10 * 9/10 * 9/10 = 3645/9000 = 809/2000.
Is the product of two natural numbers always a natural number?
Yes. Natural numbers, or counting numbers, cannot produce non-natural numbers, or complex numbers, through methods of multiplication or addition. However 5 divided by 3 creates the complex number 1.666666.... So division of two naturals can produce a complex. Also 6 minus 10 creates -4 which is not a natural number.
What two numbers have a difference of 5 and a product of 3.36?
The numbers are: 28/5 and 3/5
Given two real numbers whose sum is ten What is their maximum product?
5+5 = 10 (Sum is ten)5*5 = 25 (Product is 25)*this product is maximum for all any 2 real numbers that == 10
