1 2
1: : 4 , 3 . ?
. . - , - . , .. n(A)=4, . , , 3, .. n(C)=3. , , , . 1.
: :
1
1
\ = 1 , .. n(B1) = n(A).
, 1 , 1 =Æ.
: n(B) = n(B1 ) = n(B1) + n(C); n(B) = 4+3 = 7.
2: , : 3 , 2. ?
: , 1, .. , (.2).
=1, , , =3. , , =2. .. , : = + .
2 | =3 =2 m()= me(a)+m() m() = 2+3 m () = 5 : 5 . |
3: , : 12 , 3 . ?
: , 1, = 1 , .. , , (.3).
=1, , = 12.
b , , = 3.
, me() -? , 3 , , .. , 3 .
d=a, c = d b. = 12, d = 12. me(c)= me(d)-me() me(c)=12-3 me(c)=9 | 3 |
: 9 .
(1 , 2 )
1. ; :
|
|
) 7091 + (1819 + 509); ) (9073 + 1329) + 2671;
) 386 + 287 + 213 + 564; ) 3057 + 1561 + 1513 + 829 + 2564;
) (372 4) 5; ) 125 15 6 8;
) 20 811 4; ) 350 44 20 50.
) 57 247 + 57 362; ) 37 42 + 37 36 - 78 27;
) 47 3 + 53 3; ) 5(12+25).
2. ? ? .