if 18,x,y,-3 are in A.P:then find the value of a18-a13
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a=18
a4 = -3
we know that a4=a+3d
a+3d = -3
18 + 3d = -3
d = -7
x=11
y=4
thn a18-a13
a+17d -a-12d
17d -12d
17 *-7 - 128 * -7
-119 - (-896)
-119 + 896
777
a4 = -3
we know that a4=a+3d
a+3d = -3
18 + 3d = -3
d = -7
x=11
y=4
thn a18-a13
a+17d -a-12d
17d -12d
17 *-7 - 128 * -7
-119 - (-896)
-119 + 896
777
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