83 × 87 × 93 × 59 × 61 का इकाई अंक ज्ञात कीजिये।

  1. 9
  2. 4
  3. 7
  4. 3

Answer (Detailed Solution Below)

Option 3 : 7
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Detailed Solution

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दिया है:

83 × 87 × 93 × 59 × 61

गणना:

83 × 87 × 93 × 59 × 61

इकाई अंक लेने पर

⇒ 3 × 7 × 3 × 9 × 1

⇒ 21 × 27

पुनः इकाई अंक लेने पर

⇒ 1 × 7

⇒ 7

∴ 83 × 87 × 93 × 59 × 61 का इकाई अंक 7 है। 

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