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प्र: Math Challenge 2085 0

  • 1
    7
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  • 2
    44
    सही
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  • 3
    4
    सही
    गलत
  • 4
    33
    सही
    गलत
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उत्तर : 3. "4"
व्याख्या :

Answer: C) 4 Explanation: Let the required number be 'N' given that its quarter i.e; N/4 exceeds its double i.e, 2N by 7 => N/4 + 7 = 2N => N + 28 = 8N 7N = 28 N = 4.

प्र: Which city has become the first Indian city to have its own logo? 2084 0

  • 1
    Bengaluru
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  • 2
    Hyderabad
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  • 3
    New Delhi
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  • 4
    Gujarat
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उत्तर : 1. "Bengaluru"
व्याख्या :

Answer: A) Bengaluru Explanation: Bengaluru becomes the first Indian city to get its very own logo Much like New York and Singapore, Bengaluru is set to get its own logo, becoming the first Indian city to do so.

प्र: In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there ? 2084 0

  • 1
    205
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  • 2
    194
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  • 3
    209
    सही
    गलत
  • 4
    159
    सही
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उत्तर : 3. "209"
व्याख्या :

Answer: C) 209 Explanation: We may have (1 boy and 3 girls)or(2boys and 2 girls)or(3 boys and 1 girl)or(4 boys). Required number of ways = (C16× C34) + C26×C24  + (C36× C14) + (C46)   = (24+90+80+15)  = 209.

प्र: The sides of a right-angled triangle are 12 cm, 16 cm, 20 cm respectively. A new right angle Δ is made by joining the midpoints of all the sides. This process continues for infinite then calculate the sum of the areas of all the triangles so made. 2083 0

  • 1
    312 sq.cm
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  • 2
    128 sq.cm
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  • 3
    412 sq.cm
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  • 4
    246 sq.cm
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उत्तर : 2. "128 sq.cm"
व्याख्या :

Answer: B) 128 sq.cm Explanation: Area =    = 96   Sum of Area =

प्र: 14 persons are seated around a circular table. Find the probability that 3 particular persons always seated together. 2081 0

  • 1
    11/379
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  • 2
    21/628
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  • 3
    24/625
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  • 4
    26/247
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उत्तर : 3. "24/625"
व्याख्या :

Answer: C) 24/625 Explanation: Total no of ways = (14 – 1)! = 13! Number of favorable ways = (12 – 1)! = 11!   So, required probability = 11!×3!13! = 39916800×66227020800 = 24625

प्र: The ratio of investments of two partners A and B is 7:5 and the ratio of their profits is 7:10. If A invested the money for 5 months, find for how much time did B invest the money ? 2080 0

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    11 months
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  • 2
    9 months
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  • 3
    7 months
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  • 4
    10 months
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उत्तर : 4. "10 months"
व्याख्या :

Answer: D) 10 months Explanation: 7x5: 5xk = 7:10k = 10 months

प्र: What is one way to appeal to ethos? 2079 0

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    By referencing trusted sources
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  • 2
    By starting with a specific argument
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  • 3
    By creating a repetitive pattern
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  • 4
    By choosing descriptive nouns
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उत्तर : 3. "By creating a repetitive pattern"
व्याख्या :

Answer: C) By creating a repetitive pattern Explanation: The Three Rhetorical Appeals is an argument made by Aristotle in which he states that there are three elements to the art of persuasion: ethos, pathos and logos.   Ethos is the ethical appeal, which intends to persuade the audience of the author's credibility/character. Pathos is the emotional appeal, which intends to persuade the audience by appealing to their emotions. Logos is the logical appeal, which intends to persuade the audience using reason and logic.   In order to make an ethos, or ethical appeal, convince the audience that you are a reliable, intelligent and can be trusted. Here is how you can achieve this: 1. Provide personal experience or know someone whose experience can relate to what you are talking about 2. Use detailed and recent research in your argument 3. Use professional and appropriate vocabulary 4. Avoid sounding overly emotional 5. Only use first person when talking about personal experience; otherwise, write in third person.

प्र: A line is an undefined term because it 2079 0

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उत्तर :
व्याख्या :

A line is an undefined term because of it :   1. Contains an infinite number of points 2. can be used to create other geometric shapes 3. is a term that does not have a formal definition   In Geometry, unless it's stated, a line will extend in one dimension and goes on forever in both ways.

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