Find the Cardinality of the set:
{48,49,...,189,190}

Question

Find the Cardinality of the set:
 {48,49,...,189,190}

amistre64 · Answer

190-48

amistre64 · Answer

possibly +1

amistre64 · Answer

or -1 ... that odd ball tends to throw me

anonymous · Answer

Why do you subtract 190 from 48?

amistre64 · Answer

cardinality means, how many numbers are there

amistre64 · Answer

these are numbered 1 apart from each other

anonymous · Answer

I understand. But I have to show the general term as well

amistre64 · Answer

general term?

amistre64 · Answer

just for dbl chk; lets assume a set of 3,4,5

5-3 = 2, so add 1 to get "3"

anonymous · Answer

Yes, this is an example
{2,4,6,8,10...2n..}
{1,2,3,4,5,...n...}

amistre64 · Answer

this set is finite since it starts and stops in a given range

amistre64 · Answer

that and i cant recall clearly what general term means :)

anonymous · Answer

Ohhhhh okay!!!! So I would just subtract 190 from 48 to get the cardinality?

amistre64 · Answer

yes, and add 1, as my dbl chk indicated

amistre64 · Answer

4,5,6,7

7-4 = 3, but there are 4 terms so add 1

anonymous · Answer

Where did you get 4,5,6,7, from?

amistre64 · Answer

from my head, it was to see if subtracting the first from the last was accurate or if i needed to modify the results since there is always one little straggler that never gets counted

amistre64 · Answer

in other words, practice on something that is more doable than 150 numbers :)

amistre64 · Answer

if it works on a set of 3 or 4, itll work on a set of 1 to 50000000 if need be