3. $$ 5^{9}+1 $$ natural son uchun quyidagi fikrlardan qavsi biri to'g'ri? A) juft va tub son. B) toq va tub son. C) toq va murakkab son. (D) juft va murakkab son.

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$$ 5^{9} + 1 $$ sonini tahlil qilaylik:

1. **Juft yoki toq ekanligini aniqlash:**
   - $$ 5^{9} $$ toq son, chunki 5 toq son va uning har qanday darajasi ham toq bo'ladi.
   - $$ 5^{9} + 1 $$ toqqa 1 qo'shilganda natija juft bo'ladi.

2. **Tub yoki murakkab ekanligini aniqlash:**
   - Har qanday juft son, agar u 2 dan katta bo'lsa, murakkab son hisoblanadi, chunki 2 ga bo'linadi.

Shunday qilib, $$ 5^{9} + 1 $$ soni **juft** va **murakkab** son hisoblanadi.

**To'g'ri javob:**  
**D) juft va murakkab son.**
$$ 5^{9} + 1 $$ soni **juft** va **murakkab** son.

3. \( 5^{9}+1 \) natural son uchun quyidagi fikrlardan qavsi biri to'g'ri? A) juft va tub son. B) toq va tub son. C) toq va murakkab son. (D) juft va murakkab son.

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