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1. $2^{n} \div 2^{n - 1} = ?$

Answer: Option A

Explanation:

2^{n} \div 2^{n - 1} = 2^{n - n + 1} = 2^{1} = 2 যদি মূল বা বেস একই থাকে তবে ভাগ হলে পাওয়ার - পাওয়ার হয়  আর যদি মূল বা বেস একই থাকে তবে গুণ হলে পাওয়ার + পাওয়ার হয়

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