Javob
:
.
329
,
0
1
1
2
5
2
3
3
8
3
5
C
C
C
C
14. Radiusi
R
ga teng doiraga nuqta tavakkaliga tashlangan. Uning shu doiraga
ichki chizilgan muntazam ko’pburchakka tushishi ehtimolini toping: 1)
uchburchakka;
2) to’rtburchakka; 3) oltiburchakka.
Javob
: 1)
;
4
3
3
2)
;
2
3)
.
2
3
3
15. Ikki talaba tayin joyda soat 18 bilan 19 oralig’ida uchrashishga, oldin kelgan
talaba ikkinchisini 20 minut o’tgunicha kutishga
va u kelmasa keyin ketishga
kelishishdi. Agar har bir talaba o’zining kelish paytini tavakkaliga (18 bilan 19
oralig’ida ) tanlasa , ularning uchrashishi ehtimolini topign.
Javob
:
.
9
5