সংখ্যা 32015 এর শেষ অঙ্কটি কত? 

This question was previously asked in
IB ACIO Grade-II Official Paper-I (Held On: 22 Feb, 2015)
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  1. 1
  2. 3
  3. 5
  4. 7

Answer (Detailed Solution Below)

Option 4 : 7
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প্রদত্ত:

32015

গণনা:

3, চক্রতার নিয়ম অনুসরণ করে

31 এর একক অঙ্ক = 3 

32 এর একক অঙ্ক = 9 

33 এর একক অঙ্ক = 7 

34 এর একক অঙ্ক = 1 

এখন,

2015 কে যখন 4 দ্বারা ভাগ করা হয়

ভাগফল = 3

∴ 32015 এর একক অঙ্ক = 33 = 7 (শেষ অঙ্ক)

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