the nth term of an AP 5,2,-1,-4,-7
Answers
Step-by-step explanation:
Given A.P is
5,2,−1,−4,−7,...…..
number of terms of A.P is n
first term of this A.P is a
1
=5
second term of this A.P is a
2
=2
common difference
d=a
2
−a
1
=2−5=−3
we know that sum of n term of an A.P is given by
S
n
=
2
n
[2a+(n−1)d)]
⟹S
n
=
2
n
[2×5+(n−1)×−3)]
⟹S
n
=
2
n
[10−3n+3)]
hence the sum of n terms of given A.P is .
⟹S
n
=
2
n
[13−3n]
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Answer:
if you educate girl and she will educate the nation based on the slogan writing on a paragraph using below mentioned him and educated girl is sure to educate the future family should realise the importance of education a mother is first teacher in life of child
Step-by-step explanation:
if you educate girl and she will educate the nation based on the slogan writing on a paragraph using below mentioned him and educated girl is sure to educate the future family should realise the importance of education a mother is first teacher in life of child
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