If the pth term of an AP is qth is p, the nth term is
A) P2-q2
B) P+q-n
C) P+q
D) 0
E) 1
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OpenStudy (anonymous):
check question again!
OpenStudy (anonymous):
is qth is p???????
OpenStudy (anonymous):
oh yeah theres a typo just a minute
OpenStudy (anonymous):
\[a_{p}=q\]
\[a_{q}=p\] ??
OpenStudy (anonymous):
If the pth term of an AP is q and the qth is p, the nth term is
A) P2-q2
B) P+q-n
C) P+q
D) 0
E) 1
awright this is correct
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OpenStudy (anonymous):
the answer is coming out to be B
OpenStudy (anonymous):
how dyu get that again?
OpenStudy (anonymous):
THE PTH term of an AP is :
a+(p-1)d=q............(1)
and the qth term of an AP is ::
a+(q-1)d=p.............(2)
now subtract (2) from (1), to get d=-1
now put the value of d in any one of the equations to get the value of a
now,substitute the value of a and d in the nth term of AP ie a+(n-1)d
OpenStudy (anonymous):
a-first term of the sequence
d-common difference
OpenStudy (anonymous):
got it????
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