How many different combinations of dots are used in Braille?

Question

A)49
B)63
C)75
D)87

Answer 1

Letters and numbers are formed by embossing one or more dots within the cell. There are 64 different combinations of dots that can be formed within a cell

Answer 2

There are several versions and variations of Braille but the most common one uses 6 dots which would normally allow 63 combinations of dots, plus no dot which is used as space between words.
But there are several patterns which can not be use alone.
One dot is only used for A = dot 1 , the other five being omitted to avoid confusion (used in Grade 2 Braille, but only in combination with other characters)
Two dots horizontally is used only for C = dots 1,4 the other two being omitted.
Two dots vertically is used only for B, the other 3 being omitted.
Three dots is used in various arrangements, but only in the upper 4 cells, leaving out 4 combinations in the lower 4 cells
Four dots in a square is used for G in the upper 4 cells, omitting the lower 4 possibility.
If you have been subtracting, you are down to 49, which of the answers given is the correct one.

Answer 3

Braille is capable of 64 possible combinations of characters

binary math. six dots that can be on or off same as a computer.

2^6 = 64

If the instructor decided no markings does not count as a combination of dots then the correct answer would be 63.

But then they would not be allowed to give a zero on a test as that would not be a mark by that sort of thinking.

Answer 4

Let's see, 26 letters and 0 through 9 numbers. Oh, let's not forget punctuation. Add another 5 or 10 there. So where are we? At about 49. So, my answer is A) 49.

Answer 5

E) 64