PLEASE NOTE: THIS IS AN OLD VERSION. The current version is linked from The Complete Lojban Language.
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12. Number questions

The following cmavo is discussed in this section:

   xo  PA  number question
The cmavo ``xo'', a member of selma'o PA, is used to ask questions whose answers are numbers. Like most Lojban question words, it fills the blank where the answer should go. (See Chapter 19 for more on Lojban questions.) 
12.1)    li re su'i re du li xo
    the-number 2 plus 2 equals the-number what?
    What is 2 + 2?

12.2)    le xomoi prenu cu darxi do
    the what-number-th person hit you?
    Which person [as in a police lineup] hit you?
``xo'' can also be combined with other digits to ask questions whose answers are already partly specified. This ability could be very useful in writing tests of elementary arithmetical knowledge: 
12.3)    li remu pi'i xa du li paxono
    the-number 25 times 6 equals the-number 1?0
to which the correct reply would be ``mu'', or 5. The ability to utter bare numbers as grammatical Lojban sentences is primarily intended for giving answers to ``xo'' questions. (Another use, obviously, is for counting off physical objects one by one.)
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Special mekso selbri 		lojbau mekso: Mathematical Expressions in Lojban
The Lojban Reference Grammar 		Next
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