CBSE Class 10 Answered
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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