alleryএকটি শিশুর বয়সের দ্বিগুণের সাথে 4 যোগ করলে 12 হয়। বছর হিসেবে শিশুটির বয়স হল
A4
B6
C2
D8
Answer & Solution
Correct answer: A. 4
2x + 4 = 12 থেকে পাওয়া যায় 2x = 8, সুতরাং x = 4।
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