finf the 20 th term from the last term of the AP 3,8,13....253
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Answered by
2
here is your answer
hope this will help you
hope this will help you
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tshering27:
thank u it was for my test
it's my pleasure
tnx
it's wrong!!!!
you have found the value of "n"
yup
o sorry it's incomplete ans
his answer is right
sorry once again
Answered by
3
Heya mate here is your answer..
a=3
d= 5
l= 253
we know that,
an= a+(n-1)d
253= 3+(n-1)5
253-3= 5(n-1)
250= 5(n-1)
50=n-1
so, n= 51
FRom last 20th term of AP will be the 32th term
Now,
a32= a+(n-1)d
3+(32-1)5
= 3 + 31 X 5
= 3+155
= 158 ans...
hope it helps you!!
a=3
d= 5
l= 253
we know that,
an= a+(n-1)d
253= 3+(n-1)5
253-3= 5(n-1)
250= 5(n-1)
50=n-1
so, n= 51
FRom last 20th term of AP will be the 32th term
Now,
a32= a+(n-1)d
3+(32-1)5
= 3 + 31 X 5
= 3+155
= 158 ans...
hope it helps you!!
tq i did myself and the answer is 51
ok
but according to question his answer is right
it's ok
but the 20 th term is 88
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