Question

find THE 5th term of ap 2, 7, 12

Answer 1

Given A.P = 2,7,12

To find : t5

Sol. t1 = 2 = a

t2 = 7

t3 = 12

d = t2 - t1

d = 7-2

d = 5

d = t3 - t2

d = 12-7

d = 5

tn = a + ( n-1 )d

t5 = 2 + ( 5-1 )5

t5 = 2 + (4)5

t5 = 2 + 20

t5 = 22

Therefore, the fifth term of the given A.P is 22

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Answer 2

HEY MATE

here is your answer

AP- 2,7,12.....

a = 2

d = 7 - 2

d = 5

An = a + (n - 1) d

A5 = 2 + (5 - 1) 5

     = 2 +20

     = 22

the fifth term of the AP is 22

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