A woman borrowed ₹ 10,00,000 from her friend and promised to return the borrowed money in monthly instalments beginning from the next month. After one month, she returned ₹ 10,000, the next month she returned ₹ 15,000, the third month she returned ₹ 20,000 and so on, thereby increasing the monthly instalment uniformly.

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CASE_STUDIESGeneral Term of Arithmetic ProgressionFinding nth Term of Arithmetic ProgressionSum of First n Terms of Arithmetic ProgressionCBSE PYQ4 sub-questions

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In a garden, saplings of rose flowers were planted at equal intervals to form a spiral pattern. The spiral is made up of successive semicircles, with centres alternatively at A and B, starting with centre at A, of radii 50 cm, 100 cm, 150 cm, ....... as shown in the figure given below. Spiral 1 has 10 flowers, Spiral 2 has 20 flowers, Spiral 3 has 30 flowers and so on.

CASE_STUDIESGeneral Term of Arithmetic ProgressionSum of First n Terms of Arithmetic Progression

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