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A (2)-letter code is to be formed from (5) given English letters. If letters may be repeated, how many codes are possible?एक (2)-अक्षर का कोड अंग्रेज़ी के (5) दिए गए अक्षरों से बनाना है। यदि अक्षर दोहराए जा सकते हैं तो कितने कोड बनेंगे?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (25)(25)
Each position can take (5) letters, so (5\times5=25). If repetition is allowed in a code, keep the same choices for each position.हर स्थान पर (5) अक्षर आ सकते हैं इसलिए (5\times5=25)। कोड में पुनरावृत्ति हो तो प्रत्येक स्थान पर समान विकल्प रखें।
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