DISINI 09-10
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If the length of the rectangle is x meters, then the width of the rectangle is 16 x meters... The sum of the interior angles of a pentagon is
In order to find N , which is the smallest possible integer whose digits have a fixed product, we must first find the minimum possible number of digits with this product5. (This
Let F ( n ) represent the number of ways that a positive integer n can be written as the sum of positive
To get the largest possible number by using the digits 1, 2, 5, 6, and 9 exactly once, we must choose the largest digit to be the first digit, the next largest for the next digit,
Since the digits in the decimal expansion repeat with period 6, then the integer consists of 16 copies of the digits 714285 followed by 714... This is 69 digits
To find the smallest possible sum, we first choose the tens digit of each number to be as small as possible. Therefore, we choose 5 and 6 as the two
When two integers are multiplied together, the final two digits (the tens digit and the units digits) of the product are determined by the final two digits of each of the two
A nine-digit number contains each of the digits 1, 2, 3, 4, 5, 6, 7, 8 and 9 exactly once, and every two adjacent digits of this nine-digit number form a two-digit number which is
