366 × 641 × 753 मध्ये एककाचा अंक किती आहे

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RRB ALP Fitter 23 Jan 2019 Official Paper (Shift 3)
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  1. 8
  2. 3
  3. 6
  4. 7

Answer (Detailed Solution Below)

Option 1 : 8
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दिलेले आहे​: 7

366 × 641 × 753

संकल्पना:

संख्येच्या घातांकाचा एकक अंक प्रत्येक चौथ्या वेळी पुनरावृत्ती करतो

गणना:

366 चा एकक अंक

⇒ 66/4

⇒ 2 (3 ची चक्रीयता 4 आहे म्हणून)

म्हणून, शेवटचा अंक = 32

⇒ 9

तसेच, 641चा एकक अंक = 6 

तसेच, 753चा एकक अंक

⇒ 53/4

⇒ 1 (7 ची चक्रीयता 4 आहे म्हणून)

म्हणून, शेवटचा अंक = 71

⇒ 7

आता दोघांचा गुणाकार करून 

⇒ 9 × 6 × 7 = 378

∴ एकक अंक 8 आहे.

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