alleryএকটি 10-তলা ভবনে, Wilma এমন একটি তলায় বাস করে যার নিচে থাকা তলার সংখ্যা তার উপরে থাকা তলার সংখ্যার দ্বিগুণ। সেটি কোন তলা?
A8
B7
C6
D5
Answer & Solution
Correct answer: B. 7
floor 7-এ নিচে 6-টি তলা এবং উপরে 3-টি তলা রয়েছে, এবং 6 হলো 3-এর দ্বিগুণ।
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