u8 = a + 7b = 41
u5 = a + 4b = 29
----------------------- -
3b = 12
b = 4
u5= a + 4(4) = 29
a = 29-16
a = 13
u30 = a + 29b
u30 = 13 + 29(4)
u30 = 129
s30 = 15 (13+129)
s30 = 2130 (C)
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u8 = a + 7b = 41
u5 = a + 4b = 29
----------------------- -
3b = 12
b = 4
u5= a + 4(4) = 29
a = 29-16
a = 13
u30 = a + 29b
u30 = 13 + 29(4)
u30 = 129
s30 = 15 (13+129)
s30 = 2130 (C)
u5 = a + 4b = 29
------------------ -
3b = 12
b = 4
(I) U8 = a + 7b = 41
a + 7(4) = 41
a + 28 = 41
a = 13
Sn = 1/2 n [2a + (n-1)b ]
= 1/2 30 [2x13 + (29)4 ]
= 15 [ 26 + 116 ]
= 15 x 142
= 2130