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13.5E: Kanuni za Kuhesabu (Mazoezi)

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    31. Kuna njia ngapi za kuchagua namba kutoka kwenye seti\ {-10, -6,4,10,12,18,24,32\} ambayo inagawanyika kwa ama 4 au 6?

    32. Katika kundi la wanamuziki 20, 12 hucheza piano, 7 hucheza tarumbeta, na 2 hucheza piano na tarumbeta. Wanamuziki wangapi wanacheza piano au tarumbeta?

    33. Ni njia ngapi ambazo zipo kujenga msimbo wa tarakimu 4 ikiwa namba zinaweza kurudiwa?

    34. Pale ya rangi ya rangi ya maji ina vivuli 3 vya kijani, vivuli 3 vya bluu, vivuli 2 vya nyekundu, vivuli 2 vya njano, na kivuli 1 cha nyeusi. Kuna njia ngapi za kuchagua kivuli kimoja cha kila rangi?
    35. Tumia\(P(18,4)\).

    36. Katika kundi la 5 Freshman, sophomores 10, juniors 3, na wazee 2, ni njia ngapi ambazo rais, makamu wa rais, na mweka hazina wanaweza kuchaguliwa?

    37. Tumia\(C(15,6)\).

    38. Duka la kahawa lina roasts 7 za Guatemala, roasts 4 za Cuba, na roasts 10 za Costa Rican. Ni njia ngapi ambazo duka linaweza kuchagua 2 Guatemalan, 2 Cuba, na 3 Costa Rican roasts kwa ajili ya tukio tasting kahawa?

    39. Je, ni subsets ngapi ambazo seti\(\{1,3,5, \ldots, 99\}\) ina?

    40. Siku spa inadai kiwango cha msingi cha siku ambacho kinajumuisha matumizi ya sauna, bwawa, na mvua. Kwa malipo ya ziada, wageni wanaweza kuchagua kutoka kwa huduma zifuatazo za ziada: massage, scrub mwili, manicure, pedicure, usoni, na kunyoa moja kwa moja. Kuna njia ngapi za kuagiza huduma za ziada kwenye spa ya siku?

    41. Ni njia ngapi tofauti ambazo neno la DEADWOOD linaweza kupangwa?

    42. Je, ni rearrangements ngapi tofauti za barua za neno DEADWOOD zipo ikiwa mpangilio lazima uanze na kuishia na barua D?