Find 21st term of the a p whose first two terms are -3 and 4
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heyyyy mate
Here is your answer...
given first A.P = a¹=-3
and a²= 4
now common difference D= a²-a¹= 4--3=4+3=7
according to question,
find 21 St term N= 21
T21= A+(n-1)×D
=-3+(21-1)×7
= -3+140
T21= 137
hope it help you
Here is your answer...
given first A.P = a¹=-3
and a²= 4
now common difference D= a²-a¹= 4--3=4+3=7
according to question,
find 21 St term N= 21
T21= A+(n-1)×D
=-3+(21-1)×7
= -3+140
T21= 137
hope it help you
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