Question

find the 6th term from the end of the AP 17, 14 ,11,...........,40​

Answer 1

GIVEN : A.P = 17, 14,11,.....,40.

WE HAVE TO FIND 6TH TERM FROM END SO WE'LL REVERSE THE AP

REVERSE FORM OF AP = 40,....,11,14,17

d = 14 - 17 = -3 , a = 40

tn = a + (n-1) d

t6 = 40 + ( 6 - 1 ) × ( -3)

t6 = 40 + 5 × ( -3 )

t6 = 40 + ( -15 )

t6 = 40 - 15

t6 = 25

THE 6TH TERM OF AN AP FROM THE END US 25.

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