which of the following statements is incorrect?

A log1010=1
B log2+3=log2+3
C log101=0
D log(1+2+3)=log1+log2+log3

Correct Answer: log(1+2+3)=log1+log2+log3

জানা আছে, ত্রিভুজের তিন কোণের সমষ্টি = 180°অর্থাৎ 70° + 90° + তৃতীয় কোণ = 180°বা তৃতীয় কোণ = 180° - 160°<math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>&#x2234;</mo></math> তৃতীয় কোণ = 20°এখন, 1 রেডিয়ান = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mn>2</mn><mi mathvariant = "normal">&#x3C0;</mi></mfrac></math> সমকোণঅর্থাৎ 1 সমকোণ বা 90° = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mi mathvariant = "normal">&#x3C0;</mi><mn>2</mn></mfrac></math> রেডিয়ান <math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>&#x2234;</mo></math> 20° = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mi mathvariant = "normal">&#x3C0;</mi><mo>&#xD7;</mo><mn>20</mn><mo>&#xB0;</mo></mrow><mrow><mn>2</mn><mo>&#xD7;</mo><mn>90</mn><mo>&#xB0;</mo></mrow></mfrac><mo> = </mo><mfrac><mi mathvariant = "normal">&#x3C0;</mi><mn>9</mn></mfrac></math> রেডিয়ান
Bissoy MCQ
#গণিত #Dutch-Bangla Bank Ltd #Dutch-Bangla Bank Ltd - Probationary Officer - 21.12.2012

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কার্বন মৌল হীরা ও গ্রাফাইট-এ ভিন্নরূপ। এদের ক্ষেত্রে কোন উক্তিটি সত্য নয়? (Diamond and graphite are the allotropes of carbon. For them. which of the following statements is incorrect?
A উভয়েই কার্বন মৌল দ্বারা গঠিত। (Both of them are made of carbon.)
B হীরা ও গ্রাফাইটে কার্বন পরমাণুর সংকরায়ন হলো যথাক্রমে sp3 ও sp2 (Hybridization of carbon atom in diamond and graphite are sp3 and sp2, respectively.)
C উভয়ের দহন তাপ একই। (Both of them possesses the same heat of combustion.)
D উভয়ের বিদ্যুৎ পরিবাহিতা ভিন্ন। Both of them possesses different electrical conductivity.)
কার্বন মৌল হীরা ও গ্রাফাইট -এ ভিন্নরূপ। এদের ক্ষেত্রে কোন উক্তিটি সত্য নয়? (Diamond and graphite are the allotropes of carbon. For them, which of the following statements is incorrect?)
A উভয়েই কার্বন মৌল দ্বারা গঠিত। (Both of them are made of carbon )
B হীরা ও গ্রাফাইটে কার্বন পরমাণুর সংকরায়ন হলো যথাক্রমে sp3 ও sp2। (Hybridization of carbon atom in diamond and graphite are sp3 and sp2, respectively.)
C উভয়ের দহন তাপ একই (Both of them possesses the same heat of combustion)
D উভয়ের বিদ্যুৎ পরিবাহিতা ভিন্ন। (Both of them possesses different electrical conductivity)

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