INTERVALE DE NUMERE REALE

Dintre mulțimile următoare, cea care conține doar numere raționale este:

{−2 ; √2 ; √(4/9)}

Corect Incorect Correct answer

{√(1/(0,25)) ; −1*1/3 ; −〖√2〗^2}

Corect Incorect Correct answer

{√2 ;2√2 ;3√2}

Corect Incorect Correct answer

{−1/2 ; −1/√2 ; −1/(√2)^2 }

Corect Incorect Correct answer

Dacă A = {x∈N | 2x-3≤5} și B = {x∈Z | -3≤x+2≤4} atunci A ∩ B este:

∅

Corect Incorect Correct answer

{0}

Corect Incorect Correct answer

{0 ; 1 ; 2}

Corect Incorect Correct answer

{-1 ; 0 ; 1}

Corect Incorect Correct answer

Cardinalul mulțimii A = {x∈Z* │ |x|<3} este:

2

Corect Incorect Correct answer

4

Corect Incorect Correct answer

6

Corect Incorect Correct answer

7

Corect Incorect Correct answer

Suma elementelor mulțimii A = {x∈Z | -1≤x-1≤2} este:

0

Corect Incorect Correct answer

2

Corect Incorect Correct answer

6

Corect Incorect Correct answer

4

Corect Incorect Correct answer

Fiind dată mulțimea A = {x∈Z │ |x|<5}, este adevărată propoziția:

{-5 ; 5} ⊂ A

Corect Incorect Correct answer

{-4 ; 4} ⊂ A

Corect Incorect Correct answer

A = {1 ; 2 ; 3 ; 4}

Corect Incorect Correct answer

A = {0 ; 1 ; 2 ; 3 ; 4}

Corect Incorect Correct answer

INTERVALE DE NUMERE REALE

Sumar Test

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