alleryসিজার সাইফারের একটি ভিন্ন রূপে A-কে 4 এবং B-কে 5 হিসেবে লেখা হয়। কোন সংখ্যাটি C-কে নির্দেশ করে?
A4
B6
C5
D7
Answer & Solution
Correct answer: B. 6
সংখ্যাগুলি অক্ষরের সাথে সাথে এক এক করে বৃদ্ধি পায়, তাই তৃতীয় অক্ষরের জন্য 5-এর পরের মানটি হলো 6।
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