1.

इस श्रंखला को देखिए : 21, 9, 21, 11, 21, 13, 21……… अगली संख्या क्या होगी चाहिए ?A. 14B. 15C. 21D. 23

Answer» Correct Answer - B
`21to21to21to21to9overset(+2)(to)11overset(+2)(to)13overset(+2)(to)15`


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