The invention of the common mathematical calculation layout known as the matrix determinants was developed independently by whom? MCQ with Answer and Explanation

Question

The invention of the common mathematical calculation layout known as the matrix determinants was developed independently by whom?

A. Isaac Newton

B. Blaise Pascal

C. René Descartes

D. Gottfried Wilhelm Leibniz and Seki Takakazu

Answer: Option D

Solution (By JKSSB Mock Tests)

Leibniz and Japanese mathematician Seki Takakazu independently developed algebraic determinant patterns to resolve linear simultaneous groupings.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that certain types of biological viruses infect and replicate exclusively inside bacterial cell hosts, establishing 'Bacteriophages'?

A. Louis Pasteur

B. Robert Koch

C. Dmitri Ivanovsky

D. Frederick Twort and Félix d'Hérelle

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Correct Answer: Option D

Explanation:
Twort and d'Hérelle independently isolated filterable bacterial lysis agents, establishing early phage therapeutic concepts.

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The invention of the common mechanical office typewriter correction tape ribbon method was developed by which company?

A. Smith Corona

B. Underwood

C. Remington

D. IBM on the Selectric typewriter series

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Correct Answer: Option D

Explanation:
IBM integrated specialized adhesive lift-off correction ribbons into Selectric mechanical ball typing tracking frameworks in 1973.

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Question #3

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The invention of the modern calendar system used globally today, the Gregorian Calendar, was introduced by which pope in 1582?

A. Pope Urban II

B. Pope Julius II

C. Pope Gregory XIII

D. Pope Gregory VII

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Correct Answer: Option C

Explanation:
Pope Gregory XIII decreed the modification of the older Julian calendar to fix errors regarding the length of the solar year.

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