Hello Taneya,
Please check Example 3 of Chapter 1 Class 10 Real numbers here https://www.teachoo.com/1479/491/Example-3---Show-that-any-positive-odd-integer-is-of-form-4q---1/category/Examples/
Written on April 11, 2017, 2:33 p.m.
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Answer of this question
Show that every positive odd integers is of the form(4q+1)or(4q+3) for some integer q
Davneet Singh
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