alleryযদি '256' হয় 'red colour chalk' এবং '245' হয় 'white colour chalk', তবে কোন অঙ্কটি 'white'?
A2
B5
C4
D6
Answer & Solution
Correct answer: C. 4
'256' এবং '245'-এর তুলনা করলে, অঙ্ক 2 এবং 5 নির্দেশ করে 'colour' এবং 'chalk'। '245'-এ অবশিষ্ট অঙ্কটি হলো 4, যা 'white' নির্দেশ করে।
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