Question

4. The 6 term from the end of the AP: 5,2-1,-4......-31 is
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Answer 1

Answer:

A6=-10

Step-by-step explanation:

a=5 , d=-3 , n = 6

An=a+(n-1)d

A6=5+5 (-3)

A6=5-15

A6=-10

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Answer 2

Answer:

-16

Step-by-step explanation:

Given 5;2;-1;-4...........-31

New AP: -31, -28, -25, -22, ..........., -4, -1, 2, 5.

a=-31 d=3 an=5

a6=a+5d

=-31+5(3)

=-31+15

= -16

Therefore, The sixth term is -16.

OR it can be also solved as

n=6

a=5

d= -3

l = -31

TO FIND THE nTH TERM FROM THE LAST,

APPLY THE FORMULA -l - (n-1) d(where "l" =last term).

THEN WE WILL GET -=-31 - (6-1) * -3

= -31- (5)* -3

= -31--15

=-16IS THE 6th TERM FROM THE END OF THIS A.P

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