21600 సంఖ్య యొక్క ఎన్ని కారకాలు ఖచ్చితమైన చతురస్రాలు?

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  1. 15
  2. 12
  3. 10
  4. 6

Answer (Detailed Solution Below)

Option 2 : 12
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ఉపయోగించిన భావన:

ఇవ్వబడిన సంఖ్యను కారకం చేసి, ఆపై సాధ్యమయ్యే వర్గ కారకాలను పొందడానికి అదే సంఖ్యల జతలను చేయండి

లెక్కింపు:

⇒ 21600 = 2 2 × 2 2 × 2 × 3 2 × 3 × 5 2

ఖచ్చితమైన చతురస్రాలు 21600 కారకాలు

⇒ 1

⇒ 2 2 = 4,

⇒ 3 2 = 9,

⇒ 2 2 × 2 2 = 16

⇒ 5 2 = 25

⇒ 2 2 × 3 2 = 36

⇒ 2 2 × 5 2 = 100

⇒ 2 2 × 2 2 × 3 2 = 144

⇒ 3 2 × 5 2 = 225

⇒ 2 2 × 2 2 × 5 2 = 400

⇒ 3 2 × 5 2 × 2 2 = 900

3 2 × 5 2 × 2 4 = 3600

ఖచ్చితమైన చతురస్రం = 12 ఉన్న 21600 కారకాల సంఖ్య

∴ 21600 ఖచ్చితమైన చతురస్రాల సంఖ్య యొక్క కారకాలు 12

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