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Rajan@2021Guru

Asked: March 16, 2021In: ICSE

if the sum of the first n terms of an Ap is 4n-n2 what is first term? what is the sum of first two terms? what is the second term? similarly find the 3rd and 10th and nth terms

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It is given that if the sum of the first n terms of an Ap is 4n-n2 what is first ...Read more

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Rajan@2021Guru

Asked: March 16, 2021In: ICSE

The sum of the first n terms of an A.P. is 3n2 + 6n. Find the nth term of this A.P.

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It is given that the sum of the first n terms of an A.P. is 3n2+6n. Calculate the nth term ...Read more

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Rajan@2021Guru

Asked: March 16, 2021In: ICSE

Sum of first six terms of an AP is 42. The ratio of its 10th term to 30th term is 1:3 find the first and 13th term of an AP.

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We have been given that the sum of first six terms of an AP is 42. The ratio of its 10th term to 30th term is 1:3 find ...Read more

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Rajan@2021Guru

Asked: March 16, 2021In: ICSE

The sum of the first n terms of an AP whose first term is 8 and the common difference is 20 is equal to the sum of first 2n terms of another AP whose first term is 40 and the common difference is 6. Find n.

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It is given that the sum of the first n terms of an AP whose first term is 8 and the common difference is 20 is equal ...Read more

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Rajan@2021Guru

Asked: March 16, 2021In: ICSE

If an = 3 – 4n, show that a1 , a2 , a3 …… form an A.P. Also find S20 .

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It is given that an = 3 – 4n, prove that a1 , a2 , a3 …… form an A.P. ...Read more

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Rajan@2021Guru

Asked: March 16, 2021In: ICSE

Show that a1 ,a2 ,…,an form an AP where an =3+4n Also find the sum of the first 15 terms.

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Prove that a1 ,a2 ,…,an form an AP where an =3+4n Also find the sum of the first 15 terms ...Read more

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Rajan@2021Guru

Asked: March 16, 2021In: ICSE

If sum of first 6 terms of an AP is 36 and that of the first 16 terms is 256, then find the sum of first 10 terms.

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One of the most important question from ML Aggarwal we have been given that if sum of first 6 terms of an ...Read more

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if the sum of the first n terms of an Ap is 4n-n2 what is first term? what is the sum of first two terms? what is the second term? similarly find the 3rd and 10th and nth terms

The sum of the first n terms of an A.P. is 3n2 + 6n. Find the nth term of this A.P.

Sum of first six terms of an AP is 42. The ratio of its 10th term to 30th term is 1:3 find the first and 13th term of an AP.

The sum of the first n terms of an AP whose first term is 8 and the common difference is 20 is equal to the sum of first 2n terms of another AP whose first term is 40 and the common difference is 6. Find n.

If an = 3 – 4n, show that a1 , a2 , a3 …… form an A.P. Also find S20 ​ .

Show that a1 ,a2 ,…,an form an AP where an =3+4n Also find the sum of the first 15 terms.

If sum of first 6 terms of an AP is 36 and that of the first 16 terms is 256, then find the sum of first 10 terms.

If an = 3 – 4n, show that a1 , a2 , a3 …… form an A.P. Also find S20 .