2 2 | ( जद दान दि 0.0. ) 2 Lo 1004 चलकी... D o e

1.	2 2 \| ( जद दान दि 0.0. ) 2 Lo 1004 चलकी... D o e £ ey fn %Rके गए (४ 9 N . D L//(rJ,rw)r 20e o
Answer» A+ 13 d = 2(a+7d) a + 13d= 2a+ 14d -a -d = 0 a+ d = 0 = a2 ---- --------> 1a + 5d = -8 -----> 22-1 a +5d = -8a +. d = 0------------------a = 2D = -2 a 20 = 2+ 19*-2 = -36 S20 = 10(2+(-36)) = -340

2 2 | ( जद दान दि 0.0. ) 2 Lo 1004 चलकी... D o e £ ey fn %Rके गए (४ 9 N . D L//(rJ,rw)r 20e o

Answer»

A+ 13 d = 2(a+7d)

a + 13d= 2a+ 14d

-a -d = 0

a+ d = 0 = a2 ---- --------> 1a + 5d = -8 -----> 22-1

a +5d = -8a +. d = 0------------------a = 2D = -2

a 20 = 2+ 19*-2 = -36

S20 = 10(2+(-36)) = -340