X হচ্ছে একটি ধনাত্মক সংখ্যা। যখন X+1 কে ৬ দ্বারা ভাগ করা হয় তখন অবশিষ্ট থাকে ৫। X কে ?? দ্বারা ভাগ করলে অবশিষ্ট থাকে-
A. ৭
B. ৫
C. ৪
D. ৩
সঠিক উত্তরঃ
C.
৪
Explanation:
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