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Which group below contains ONLY prime numbers between 30 and 50?
Mathematics
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Step-by-step solution
3 stepsHili hapa suluhisho la swali lako:
Elewa maana ya nambari tasa (prime number).
Nambari tasa ni nambari kamili iliyo kubwa kuliko 1 ambayo inaweza kugawanywa tu na 1 na yenyewe.
Chunguza kila chaguo na utambue nambari tasa kati ya 30 na 50.
Nambari tasa kati ya 30 na 50 ni: 31, 37, 41, 43, 47.
Sasa, hebu tuchunguze kila chaguo:-
A. 31, 33, 37, 41
- 31 ni tasa.
- 33 si tasa ().
- Hivyo, chaguo A si sahihi.
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B. 31, 37, 41, 43, 47
- 31 ni tasa.
- 37 ni tasa.
- 41 ni tasa.
- 43 ni tasa.
- 47 ni tasa.
- Nambari zote katika kundi hili ni tasa. Hivyo, chaguo B ni sahihi.
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C. 31, 39, 41, 47
- 31 ni tasa.
- 39 si tasa ().
- Hivyo, chaguo C si sahihi.
-
D. 33, 35, 37, 39
- 33 si tasa ().
- 35 si tasa ().
- 39 si tasa ().
- Hivyo, chaguo D si sahihi.
-
Chagua kundi lenye nambari tasa pekee.
Kundi pekee lenye nambari tasa pekee kati ya 30 na 50 ni chaguo B.
Jibu la mwisho ni:
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