Ratsionaalarvud

I. Hulk ja selle elemendid.

1) Kirjuta järgnevad sümbolite abil kirja pandud laused väljaloomulikus keeles.

Näide__

a B__

"a kuulub hulka B"

a) c F .............................................................................................

b) f D .............................................................................................

c) r C .............................................................................................

d) k K .............................................................................................

e) F = {1; 2; 3; 4; 5}__ .............................................................................................

f) K = {a; b; c; d} .............................................................................................

g) 100 N .............................................................................................

h) 5 F .............................................................................................

i) 16 K .............................................................................................

j) e K .............................................................................................

2) Nimeta ühekohaliste arvude hulk.

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