. .
3 20 .
: 1, 4, 2. 6(),2.4.1.
7 ,17 ,27 ,37, 47 ,57, 67, 77 ,87 93 - . 47 , 13 =60 .
8-10 .
.
22, 16 .
(2.2,4.(),4 (),2, 2.
. 19 . 22+19+16+19+22=98 . 16-18 .
12 . 43 ,11 .2, 11, 2 5 . 2. .