There are a lot of combinations, depending on what you are asking about. I think you need to specify your question a bit, however I will be writing down some answers anyway, hoping that one of my explanations will be enough to answer specifically your question:
If you are searching for two three-digit numbers that equals 70, there are an infinite number of combinations, seeing as the only goal is that it has to become 70:
170-100=70,
7000/100=70,
-700+770=70,
999666370-999666300=70 and so on...
If you are only looking for combinations of numbers consisting of only the number 3, then here are a few examples:
33+33+3+(3/3)=70
(333/3)/3+33=70
(3+3)3/3-3(((3+3)/3)/3)=70 (<--- This example is formulated perhaps a bit unnecessarily intricate, but it servers as an example showing that there really are a lot of combinations possible, as written in the statement below).
You can make several (really many) of these combinations too, only the laws of basic mathematics sets the limit!
Lastly, if you mean the numbers themselves that needs to be used must consist of solely 3:s and 2:s, then there are also a lot of combinations, wherefore the formulation of the question "what two three numbers equal 70?" is a bit misleading, as it leads us to believe that the sought solution will be the definite, only one, whereas there actually are several solutions.
Here are some simple solutions using only two's and three's:
32+32+3+3=70
32+23+3(3+2)=70
32*3-(23+3)=70
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Questions like these are always fun to answer, but it would be much appreciated if the questioner tries and specify his/her question as much as possible.
The three numbers will have a mean of 204/3 = 68. The two numbers are therefore 66, 68, 70.
Rounded to two decimal places, the square root of 70 is equal to ±8.37. Therefore, the square root of 70 is between the numbers -9 or -8, or 8 and 9.
10 and 14 5 and 28 4 and 35 2 and 70
70*2
58
There are no two consecutive numbers that equal 70 because the sum of any two consecutive numbers is an odd number.
4760
23 + 47
7, 5 and 2
280
70 and 90
1 and 70, 2 and 35, 5 and 14, 7 and 10
The prime numbers (factors) of 70 are: 2,5,7
Umm............ a lot of numbers could work. One is 70 and 3.
The three numbers will have a mean of 204/3 = 68. The two numbers are therefore 66, 68, 70.
25% is equal to 0.25 just multiply the two numbers together to get your answer 0.25 * 70 = 17.5
-62 and 70