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Hello, Experts Please help me with the correct answers below in the attachment. Chapter: Arithmetic Progression Class: 10 Board: CBSE

Asked by prakash.sanyasi | 27 May, 2020, 08:21: PM

Expert Answer

Let the first term and common difference of an AP be 'a' and 'd' respectively.

d=-3

a₂₀ = a+19d

a₁₀ = a+9d

a₂₀ - a₁₀ = a + 19d - a - 9d = 10d = 10(-3) = -30

Hence, a₂₀ - a₁₀ = -30

Answered by Renu Varma | 28 May, 2020, 09:46: AM

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