Find the 31st term of an A.P. whose 10th term is 31 and the 15th term is 66 .
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HERE'S YOUR ANSWER
we have ,
a + 9d = 31 ....( 1 )
a + 14d =66 ....( 2 )
-----------------
5d = 35
d = 7
put in eq 1st
a + 63 = 31
a = 32
now,
a + 30d = 32 + 30×7
= 32 + 210
= 242
so , The 31st term is 242
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HERE'S YOUR ANSWER
we have ,
a + 9d = 31 ....( 1 )
a + 14d =66 ....( 2 )
-----------------
5d = 35
d = 7
put in eq 1st
a + 63 = 31
a = 32
now,
a + 30d = 32 + 30×7
= 32 + 210
= 242
so , The 31st term is 242
MARK ME AS BRAINLIEST PLEASE
GujjarBoyy:
MARK ME AS BRAINLIEST PLEASE
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