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1. The first and last term of an A.P are "a" and "l" respectively. If S is the sum of all the terms os the A.P and common difference is given by { l(square)-a(square) / k-(l+a) } , then k= 2. If the sum of first n even natural numbers is eaqual to the k times the sum of first n odd natural numbers, then k= 3. If S1 is the sum of an A.P of n odd number of terms and S2 the sum of the terms of the sries in odd places then S1/S2 = 4. If in an A.P S(n)=n(square)*p and S(m)=m(square)*p , where S(r) denotes the sum of r terms of the A.P , then S(p) is equal to

1. The first and last term of an A.P are "a" and "l" respectively. If S is the sum of all the terms os the A.P and common difference is given by { l(square)-a(square) / k-(l+a) } , then k=



2. If the sum of first n even natural numbers is eaqual to the k times the sum of first n odd natural numbers, then k=


3. If S1 is the sum of an A.P of n odd number of terms and S2 the sum of the terms of the sries in odd places then S1/S2 =


4. If in an A.P S(n)=n(square)*p and S(m)=m(square)*p , where S(r) denotes the sum of r terms of the A.P , then S(p) is equal to

Grade:12

1 Answers

xyz
24 Points
7 years ago
n(1+a) for the first one second one-------- k(4n(square)-2n)=4n(square)-2n other''s i will post later

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