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See an object at 20 feet that a normal eye would see at 100 feet.

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13y ago
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Q: What do the numbers 20 100 mean for visual acuity?
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Related questions

How many prime numbers are there from 100?

'from 100' ??? If you mean 'less than 100' then there are 25 primes. If you mean 'more than 100' then the answer is infinite, just like numbers are infinite.


If the mean of 100 numerical observations is 47.83 What is the value of the sum of all 100 numbers?

100 times the mean, or 4783, because the mean is defined as the sum of all the numbers divided by the number of the numbers.


How many whole numbers are there upto 100?

Depending on how you look at it, there are either 99 or 100 whole numbers up to 100. If you mean up to and including 100, then the answer is 100 whole numbers, if not, then the answer is 99 whole numbers.


The arithmetic mean of the direct 100 natural numbers is?

That depends what the numbers are.


What is the goemetric mean of 25 and 100?

The geometric mean of 25 and 100 is the square root of 2500 which is 50. In general, the geometric mean of n numbers is the n-th root of the product of the numbers.


Do you divide your mean by 4 or 2?

You divide by the number of numbers - if you want the mean of three numbers you divide by 3, if you want the mean of a hundred numbers you divide by 100.


Is there consecutive numbers that have a mean of 100?

Any odd number of consecutive numbers in which the center number is 100 will have this property. The simplest example is 99, 100, 101.


What present out of 100 numbers have digits whose sum is 5?

I am not at all sure about "present". If you mean percent, the answer depends on which 100 numbers. Between 900 and 999, for example, the answer is 0%. For the FIRST 100 numbers: 1 to 100, the answer is 6%.


What is the mean value of 10 25 30 35?

It is: 10+25+30+35 = 100 and 100/4 = 25 which is the average mean value


What is the mean average between 78 and 100?

The average is all the numbers added together and divided by how many numbers there are. In this case: 78+100=178. 178/2=89. Therefore the mean/average of the two numbers is 89.


The mean 100 numerical observations is 51.82. what is the value of the sum of all 100 numbers?

5182


What are six numbers where the mode is 100 and the mean is less than the median?

(1, 5, 97, 99, 100, 100) The mode is 100. The median is 98. The mean is 67.