Question

012. Find 11th term from the end of the AP 3,8,13,........,253​

Answer 1

Step-by-step explanation:

from the end of AP

253,248,243,238..........

in this new AP

d= -5

a = 253

and n = 11

An = a+ (n-1)*d

253+ (11-1)*-5

253-50

203

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Answer 2

Given :

Ap series : 3,8, 13.........253

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Find out :.

11th term of an AP

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Formula used to find out

a11 = a + 10d

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Solution -

a = 3

d = a2 - a1

d = 8 - 3

d = 5

a11 = a + 10d

a11 = 3 + 10 ( 5 )

a11 = 3 + 50

a11 = 53

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Value of 11th term of AP is 53

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