Sequences and Series
For an A.P., the seventh term is 19 and the thirteenth term is 37. Find its twenty second term.
Correct Answer: Option(c)
Solution: For the given A.P., and
Subtracting eq. (1) from eq. (2)
Substituting in ,
Thus, the first term of the A.P. is 1 and the common difference is 3.
Thus, the twenty second term of the given A.P. is 64.