UP Police Constable Exam Model Paper 2

Question : 89 of 150

Marks: +1, -0

In the Arithmetic Progressive series 7, 13, 19, _______, what will be the 19

^\th

term?

Solution:

Given:
7, 13, 19, ..............., 19th term
Concept used:

\T_\n=\a+(\n-1)\d

where (

\T_\n=\n^\th

term, a = 1

^\st

term d = common difference)
Calculation:
Common difference = 6

\T_\n=\a+(\n-1)\d

⇒\T_19=7+(19-1)6

⇒\T_19=7+18×6

⇒\T_19=7+108

⇒\T_19=115

19^\th

is 115
∴ $19^\th$ term will be 115

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