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A basic and conceptual question from arithmetic progression chapter in which we have to find sum of given arithmetic series 5+(−41)+9+(−39)+13+(−37)+17+.....+(−5)+81+(−3). RS ...Read more

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Rajan@2021Guru

Asked: April 1, 2021In: CBSE

How many terms of the AP 20, 19 1/3, 18 2/3,….must be taken so that their sum is 300? Explain the double answer.

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This is the question of arithmetic progression chapter in which we have been asked to find the number of terms ...Read more

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Rajan@2021Guru

Asked: April 2, 2021In: CBSE

In a school, students decided to plant trees in and around the school to reduce air pollution. It was decided that the number of trees, that each section of each class will plant, will be double of the class in which they are studying. If there are 1 to 12 classes in the school and each class has two sections, find how many trees were planted by the students.

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This is the question of arithmetic progression chapter and I found out little bit tricky so please help me in ...Read more

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Rajan@2021Guru

Asked: April 3, 2021In: CBSE

The angle of elevation of the top of a tower from ta point on the same level as the foot of the tower is 30° . On advancing 150 m towards foot of the tower, the angle of elevation becomes 60° Show that the height of the tower is 129.9 metres.

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An important question from RS Aggarwal of Height and distance in which we to prove that the height of the ...Read more

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Find the sum of the following arithmetic series. 5+(−41)+9+(−39)+13+(−37)+17+…..+(−5)+81+(−3).

How many terms of the AP 20, 19 1/3, 18 2/3,….must be taken so that their sum is 300? Explain the double answer.

The angle of elevation of the top of a tower from ta point on the same level as the foot of the tower is 30° . On advancing 150 m towards foot of the tower, the angle of elevation becomes 60° Show that the height of the tower is 129.9 metres.