A={x|xEN and x

Question

A={x|xEN and x < 10}

amistre64 · Answer

i spose you need to define the set?

amistre64 · Answer

well, it is defined as is ... maybe defined in roster form?

anonymous · Answer

it means x is a natural number and less than 10\
write down the natural number less than 10
natural number alwys positive integer

amistre64 · Answer

natural number has controversy to it.  so it has to be author defined.  some say N starts at 0, others say it starts at 1

anonymous · Answer

general definition is it starts with one

anonymous · Answer

but in some field,,its consider as 0 as start point

amistre64 · Answer

lol, general definition is in controversy.  So it has to be author defined for clarity.

personally, I like it starting at 1.

amistre64 · Answer

anonymous · Answer

actually zero is included latter in 18th or 19th century ..i dont remember exactly

anonymous · Answer

yeah its stated their intro of zero in 1968