Question

Which term of the A.P 12,7,2-3…… is -98​

Answer 1

Answer:

a=−54{Given}

a

16

=21{Given}

⇒a+15d=21{∵a

n

=a+(n−1)d}

⇒−54+15d=21{∵a=−54}

⇒15d=21+54

⇒d=

15

75

=5

∴a

12

=a+11d

⇒=−54+(11×5)

⇒=−54+55

⇒a

12

=1

Hence the 12

th

term is 1.

Answer 2

Answer:

23 is the answer

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