01. Introduction
02….
02. Surd
02. To find H.C.F. of Given Numbers
02. Arithmetic Mean<...
01. theory
02. Example( 1 to 10 …
02. Propertie…
(26) Find the sum of all odd numbers up to 100.
Soln. The given numbers are 1, 3, 5, 7, …, 99.
∴ = 2n – 1 ⇒ 2n – 1 = 99
∴ n = 50
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