Maths Number System
How many even factors of 36000 are divisible by 9 but not by 36?
36000 के कितने सम गुणनखंड 9 से विभाज्य हैं लेकिन 36 से नहीं?
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A
(a) 20
B
(b) 4
C
(c) 10
D
(d) 12
Correct Answer: Option B
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Explanation / व्याख्या:
36000=2^5×3^2×5^3. Factor div by 9 not 36: must have 3^2 but not 2^2. So 2^1×3^2×5^k: k=0,1,2,3 → 4 factors.
36000=2^5×3^2×5^3। 2^1×3^2×5^k (k=0,1,2,3) → 4 गुणनखंड।
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