25√5 এর 5 ভিত্তিক লগ কত?
Solution
Correct Answer: Option A
log525√5
=log552×51/2
=log55 2+1/2
=log55(4+1)/2
=log555/2
=5/2log55
=log552×51/2
=log55 2+1/2
=log55(4+1)/2
=log555/2
=5/2log55
=5/2×1
=5/2
=5/2
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