Kana iwe waireva kuti "mvumo", saka ungangodaro uchibvunza mubvunzo "ndedzipi nzira dzakasiyana dzandinogona kuronga kurongeka kwenhamba ina?" Mhinduro kumubvunzo uyu (iyo iwe yawakawana zvakanaka) ndeye 24.
Saizvozvo, Ndeapi ese anogona kusanganiswa eABCD? Zvose zvinogoneka kuronga mavara abcd ari 24.
Ingani nhamba dzine manhamba mana? FOUR – DIGIT NUMBERS ndidzo nhamba dzine manhamba mana, kureva kuti dzine nzvimbo imwe chete, gumi, mamiriyoni nezviuru. Muchokwadi, kuti tiwane nhamba yenhamba pakati pemhando mbiri dzakapihwa, tinoshandisa fomula imwechete. Naizvozvo, varipo 9000 manhamba mana manhamba mune zvese.
Mangani masanganiswa aripo ane manhamba mana nemabhii? Sezvo zvese zvakasanganiswa zvichigoneka, imwe neimwe yenzvimbo ina inogona kuve nesarudzo makumi maviri nematanhatu, saka ingave 4*4*26*26 = Zviuru gumi zvinokwanisika kusanganiswa zvemashoko.
Chechipiri Mavara mana angarongwa sei? Mhinduro ndeiyi 4! = 24. Nzvimbo yekutanga inogona kuzadzwa neimwe yemavara mana.
Mangani masanganiswa emavara mashanu aripo?
Sezvo chero musanganiswa wemavara aya uchidikanwa, kana tikasanganisa chero mavara maviri kana anopfuura pamwechete, tinowana musanganiswa unobudirira. Naizvozvo, mubatanidzwa unogoneka wechero mavara mana akasiyana angave 2+6+4 = 11.
zvino Ndeapi makuru mana mana uye madiki? Zvikuru uye diki diki-manhamba mana ndidzo 1000 uye 9999 azvaitwa.
Ndeipi nhamba yakanakisa ine manhamba? The Greatest mana manhamba nhamba
So 9999 ndiyo nhamba huru ine manhamba muhurongwa hwenhamba. Saka zvinoratidzwa kuti 9999 ndiyo huru-manhamba mana nhamba.
Ndedzipi manhamba mana ane manhamba akasiyana?
Saka nemusimboti wekuverenga wakakosha, Huwandu hwenhamba dze4-manhamba ndi9.9. 8.7= 4536. Naizvozvo, kune 4536 manhamba mana ane manhamba akasiyana.
Chii chinonzi 4 character password? Pasiwedhi ine mavara mana ine yebhii rimwe chete rearufabheti uye manhamba matatu akasiyana ari pakati pa 0 na 9, zvinosanganisira. Tsamba yacho inofanirwa kuoneka seyechipiri kana yechitatu mavara epassword.
Unoverenga sei masanganiswa?
Rangarira kuti misanganiswa inzira yekuverenga mibairo yese yechiitiko uko kurongeka kwemhedzisiro hakuna basa. Kuverengera kusanganiswa, isu tichashandisa iyo fomura nCr = n! / r! * (n - r)!, apo n inomiririra nhamba yezvinhu, uye r inomiririra nhamba yezvinhu zviri kusarudzwa panguva.
Mangani masanganiswa aripo ane mavara matatu nenhamba nhatu?
Unoverenga sei nhamba yezvisanganiswa?
Rangarira, fomula yekuverenga misanganiswa ndeye nCr = n! /r! * (n – r)!, apo n inomiririra nhamba yezvinhu, uye r inomiririra nhamba yezvinhu zviri kusarudzwa panguva.
Ndeapi marongero akasiyana emavara mana anogona kuumbwa kana vara rekutanga richifanira kuva w kana k?
Saka huwandu hwenzira dzekugadzira macode ekufona ane mavara mana, kutanga naK kana W pasina kudzokororwa kwemamwe mavara. 2(25)(24)(23). Pane 2 sarudzo dzetsamba yekutanga (K kana W).
Iwe unoverenga sei nhamba yenzira dzechimwe chinhu chingarongwa? Mune mamwe mazwi, kana isu tine n zvinhu zvakakwana uye tichida kutora k mune imwe hurongwa, tinowana: n! / (n–k)! Uye iyi ndiyo nzira yekubvumidza: Nhamba yenzira k zvinhu zvinogona kuodha kubva kune n zvinhu: P(n,k) = n! / (n–k)!
Mangani masanganiswa emavara mana ane alphanumeric aripo? Kana ndanzwisisa mubvunzo wako, mhinduro inoti 4^26 (4 x 26 x 26 x 26), kana 456,976 mubatanidzwa.
Mapoka mangani evaviri anogona kugadzira vanhu 2?
Neimwe nzira, izvi zvakafanana ne. Vanhu 2 vanofanira kusarudzwa kubva pavana kuti vaumbe boka, asi imwe neimwe gadziriso icharatidza kaviri sezvo rimwe remapoka maviri rinogona kusarudzwa. Kune C(4, 4) = 6 nzira dzaungagone kuisa vanhu mukutanga kwemapoka maviri aya.
Ndeipi nhamba huru ine manhamba uchishandisa manhamba akasiyana? Nhamba huru ine manhamba, uchishandisa nhamba imwe chete i4 (9,999 ndiyo huru ine manhamba mana zvakare). Nhamba huru ine manhamba, uchishandisa manhamba maviri akasiyana i9,999. Nhamba huru ine manhamba, uchishandisa manhamba ese akasiyana ndeye 9,876.
Ndeupi musiyano uripo pakati penhamba huru ine manhamba?
Nhamba huru ye4-manhamba i9,999. Musiyano pakati penhamba idzi ungave =1,00,000 - 9,999 = 90,001.
Ndeipi nhamba huru ine manhamba inova sikweya yakakwana? Naizvozvo tinogona kuti mativi makumi mapfumbamwe nemapfumbamwe inhamba inopa nhamba huru yenhamba ina. Uye naizvozvo 9801 ndiyo nhamba huru ine manhamba inova sikweya yakakwana.
Ndeipi PIN yakaoma kwazvo ine manhamba mana?
Inenge 11% ye3.4 mamiriyoni epassword ndeye 1234. Ndiyo 374,000! Yakawanikwa kakawanda kupfuura yakaderera 4,200 macode akabatanidzwa. Yechipiri inonyanya kufarirwa 4-manhamba PIN ndeye 1111 painoda kusvika 6% (204,000).
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Izvi ndizvo zvavakawana.
chinzvimbo | PIN | Freq |
---|---|---|
#1 | 1234 | 10.713% |
#2 | 1111 | 6.016% |
#3 | 0000 | 1.881% |
#4 | 1212 | 1.197% |
Chii chinonzi kodhi ine manhamba yakaoma? Kana komputa ikafungidzira manhamba, ipapo musanganiswa wega wega haugone kufungidzira. Kana ichifembera zvichibva pamaitiro evanhu epatani, chakaomesesa kufungidzira ndechekuti “8068 ". Nechimwe chikonzero, pakaitwa chidzidzo ichi chaive chisinganyanyo shandiswa 4-manhamba musanganiswa panguva iyoyo.
Ndeapi mikana yekufungidzira nhamba ine manhamba?
Zviri nyore kwazvo. Mumadijiti mana pane 4 (10,000 kusvika 0000) zvinokwanisika. Mikana yeimwe neimwe yadzo inouya zvisina tsarukano ndeye imwe muna 10,000.