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  2. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  3. Educational stage - Wikipedia

    en.wikipedia.org/wiki/Educational_stage

    Class Cycle From age 3 Nursery school: TPS: Kindergarten: 3–4 PS: Preschool class: Cycle I : First learnings: 4–5 MS: Second preschool class: 5–6 GS: Pupil in Year 1: 6–7 Grammar school: CP: Pupil in Year 2: Cycle II : Fundamental learnings: 7–8 CE1: Pupil in Year 3: 8–9 CE2: Pupil in Year 4: 9–10 CM1: Pupil in Year 5: Cycle III ...

  4. Solar radio emission - Wikipedia

    en.wikipedia.org/wiki/Solar_radio_emission

    This exercise typically results in speeds of around 1000 km/s, which matches that of CME shocks determined from other methods. [ 73 ] While plasma emission is the accepted mechanism, Type II bursts do not exhibit significant amounts of circular polarization as would be expected by standard plasma emission theory. [ 74 ]

  5. India - Wikipedia

    en.wikipedia.org/wiki/India

    The President of India is the supreme commander of the nation's armed forces; with 1.45 million active troops, they compose the world's second-largest military. It comprises the Indian Army, the Indian Navy, the Indian Air Force, and the Indian Coast Guard. [291] The official Indian defence budget for 2011 was US$36.03 billion, or 1.83% of GDP ...

  6. Riverside, California - Wikipedia

    en.wikipedia.org/wiki/Riverside,_California

    In the city, 30.1% of the population was under the age of 18, 12.9% was from 18 to 24, 30.0% from 25 to 44, 18.0% from 45 to 64, and 9.0% was 65 years of age or older. The median age was 30 years. For every 100 females, there were 97.1 males.

  7. Donald Trump - Wikipedia

    en.wikipedia.org/wiki/Donald_Trump

    Starting in 1968, Trump was employed at his father's real estate company, Trump Management, which owned racially segregated middle-class rental housing in New York City's outer boroughs. [ 7 ] [ 8 ] In 1971, his father made him president of the company and he began using the Trump Organization as an umbrella brand . [ 9 ]

  8. Arthashastra - Wikipedia

    en.wikipedia.org/wiki/Arthashastra

    —Arthashastra 7.15.13-20, 12.1.1-9 In the Arthashastra, Books 7, 11 and 12 have given a comprehensive analysis on all aspects of the relations between states. In the first chapter of Book 6, the theoretical basis of foreign policy are described.

  9. Women in India - Wikipedia

    en.wikipedia.org/wiki/Women_in_India

    The status of women in India has been subject to many great changes over the past few millennia. With a decline in their status from the ancient to medieval times ...

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    class 12 math ex 2.8 exercise 1 english ncert solutions