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/3/
1. <an> Ž. So=0, 271=71 zł 2 L 13 : BCDE (Æ 1413)
(A) a + alo, >o (B) az +0,ooo (c) az + Aqq=0 (0) Osz oo (E) arco
2. 74
6, 7, 4, 7, 2, 3, 4, 2 THE FA 17 7 2 3 2
3 4
3. a
17'
razov, {
Anti = 3 an (+-an), na/apo-0109-
& 10x10 3 tr 4, this 100 11 3 76%
(1+2+...+)?=12°x10+=(120)
55
36
12
30 25
344
12
2
3
T22
285
24
8x8
91 49 14 064
n(ntu
2=12024
2415 n(n+h)-576050
nth=240
7x7
nnn-
4x4
6x6
5x5
2X Z
3x3
(n+16)
nh
6
+228
zodobo n (201+{n-1}xd1/12+11X37"
d=3
5, 34546:27 162
aizb 201+21d-75
2a14d =15
Br+121=1+2 3
ran=1 F M x 3 (x - 1 au!
n
5. + 2 + 3 +
+ 2 + 3 tunt n = 14400 > n=
(n(n+1)) = 14400 (nth = 14400 nith = 57600
san> a1 + a2 = 15. a 1 + 912 = 75 Size
<an zit. 830 th an-2+ and = an , n33 8=1545
aitair= air
+231) san> to Sn=-1762-4 and 1 - 2
Si=1
S2 -4 +12-4
Sn = 682 na
2
in z
S2-3
-4
95
a2=tlo