Question
Download Solution PDFभूमितीय श्रेढीमधील पाच संख्या अशा आहेत की त्यांचा गुणाकार 32 आहे. तर तिसरी संख्या शोधा.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेल्याप्रमाणे:
भूमितीय श्रेढीमधील 5 संख्यांचा गुणाकार = 32
गणना:
समजा, भूमितीय श्रेढीमधील पाच संख्या ar2, ar, a, a/r, a/r2 आहेत.
⇒ ar2 × ar × a × a/r × a/r2 = 32
⇒ a5 = 32
⇒ a5 = 25
घात समान आहेत म्हणून पाया समान घेऊ,
a = 2
a ही भूमितीय श्रेढीची तिसरी संख्या असेल.
∴ तिसरी संख्या 2 आहे.
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