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Determine the total number of different ways the 5-member audit team can be selected to confirm staffing flexibility.

Mathematics

ScanSolve AI Answer

Answer

1316

Step-by-step solution

4 steps

Huu hapa ni utatuzi wa sehemu (a) ya swali la pili (ITEM 2):

Sehemu (a):
Tunahitaji kuchagua timu ya wanachama 5 kutoka kwa wahasibu 8 wakuu na wahasibu 6 wadogo. Timu lazima iwe na angalau wahasibu wakuu 3. Hii inamaanisha kuna uwezekano tatu:

  1. Kokotoa idadi ya njia za kuchagua timu yenye wahasibu wakuu 3.

    Ikiwa kuna wahasibu wakuu 3, basi lazima kuwe na wahasibu wadogo 2 ili kufanya timu ya wanachama 5.

    • Idadi ya njia za kuchagua wahasibu wakuu 3 kutoka 8: (83)\binom{8}{3}
    • Idadi ya njia za kuchagua wahasibu wadogo 2 kutoka 6: (62)\binom{6}{2}
    (83)=8!3!(8−3)!=8×7×63×2×1=56\binom{8}{3} = \frac{8!}{3!(8-3)!} = \frac{8 \times 7 \times 6}{3 \times 2 \times 1} = 56 (62)=6!2!(6−2)!=6×52×1=15\binom{6}{2} = \frac{6!}{2!(6-2)!} = \frac{6 \times 5}{2 \times 1} = 15

    Jumla ya njia kwa kesi hii: 56×15=84056 \times 15 = 840

  2. Kokotoa idadi ya njia za kuchagua timu yenye wahasibu wakuu 4.

    Ikiwa kuna wahasibu wakuu 4, basi lazima kuwe na mhasibu mdogo 1 ili kufanya timu ya wanachama 5.

    • Idadi ya njia za kuchagua wahasibu wakuu 4 kutoka 8: (84)\binom{8}{4}
    • Idadi ya njia za kuchagua mhasibu mdogo 1 kutoka 6: (61)\binom{6}{1}
    (84)=8!4!(8−4)!=8×7×6×54×3×2×1=70\binom{8}{4} = \frac{8!}{4!(8-4)!} = \frac{8 \times 7 \times 6 \times 5}{4 \times 3 \times 2 \times 1} = 70 (61)=6!1!(6−1)!=6\binom{6}{1} = \frac{6!}{1!(6-1)!} = 6

    Jumla ya njia kwa kesi hii: 70×6=42070 \times 6 = 420

  3. Kokotoa idadi ya njia za kuchagua timu yenye wahasibu wakuu 5.

    Ikiwa kuna wahasibu wakuu 5, basi lazima kuwe na wahasibu wadogo 0 ili kufanya timu ya wanachama 5.

    • Idadi ya njia za kuchagua wahasibu wakuu 5 kutoka 8: (85)\binom{8}{5}
    • Idadi ya njia za kuchagua wahasibu wadogo 0 kutoka 6: (60)\binom{6}{0}
    (85)=8!5!(8−5)!=8×7×63×2×1=56\binom{8}{5} = \frac{8!}{5!(8-5)!} = \frac{8 \times 7 \times 6}{3 \times 2 \times 1} = 56 (60)=1\binom{6}{0} = 1

    Jumla ya njia kwa kesi hii: 56×1=5656 \times 1 = 56

  4. Jumlisha idadi ya njia kutoka kesi zote.

    Jumla ya njia zote tofauti za kuchagua timu ni jumla ya njia kutoka Kesi 1, Kesi 2, na Kesi 3.

    840+420+56=1316840 + 420 + 56 = 1316

    Jumla ya njia tofauti za kuchagua timu ya ukaguzi ya wanachama 5 ni 1316\boxed{1316}.

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