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27 and 29 I did this in my head by applying certain rules: the two numbers had to end in 7 and 9 it's the only way I could think other 1 and 3 to get a 3 at the end of the product they both had to be bigger than 20 and smaller than 30 smaller than twenty and the product is less than 400, bigger than 30 and the product is bigger than 900 After applying these two rules, the only possible answer was 27 and 29
If the product of 2 numbers is one, than those 2 numbers are recipricals
Find 3 consecutive numbers where the product of the smaller two numbers is 19 less than the square of the largest number.
The product of two rational numbers, X and Y, is smaller than either of them if both are between 0 and 1.
4,6,8,10
12 and 12, whose squares will be 144 each. If either of the numbers is smaller than 12, then the other will be larger than 12 and its square will be larger than 144.
5,6,7
11,12,13
By finding out whether they have any factors in common. If the only factor they have in common is 1, the LCM will be their product. If they have more factors in common, their LCM will be less than their product.
There are no numbers, other than 23 and 1 whose product is 23. It is a prime number. There are many numbers whose sum is 10: 9+1, 8+2, 7+3, 6+4, 5+5, etc.
The LCM of 4 and 6 is 12.
4 and 6 6 and 8 Any time the two numbers have a common factor, their LCM will be less than the product because the common factor contributes to the LCM fewer times than it contributes to the product.