IIT JEE Practice Question and Answer
8Q: 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 05b5cc6b7e4d2b4197774d62e
5b5cc6b7e4d2b4197774d62e- 1312 sq.cmfalse
- 2128 sq.cmtrue
- 3412 sq.cmfalse
- 4246 sq.cmfalse
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Answer : 2. "128 sq.cm"
Explanation :
Answer: B) 128 sq.cm Explanation: Area = = 96 Sum of Area =
Q: The Most Important Ore of Aluminium is 2083 05b5cc6b9e4d2b4197774d71b
5b5cc6b9e4d2b4197774d71b- 1Calaminefalse
- 2Monazitefalse
- 3Magnetitefalse
- 4Bauxitetrue
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Answer : 4. "Bauxite"
Explanation :
Answer: D) Bauxite Explanation:
Q: 14 persons are seated around a circular table. Find the probability that 3 particular persons always seated together. 2082 05b5cc6b6e4d2b4197774d5b8
5b5cc6b6e4d2b4197774d5b8- 111/379false
- 221/628false
- 324/625true
- 426/247false
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Answer : 3. "24/625"
Explanation :
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
Q: What is one way to appeal to ethos? 2080 05b5cc666e4d2b4197774bee4
5b5cc666e4d2b4197774bee4- 1By referencing trusted sourcesfalse
- 2By starting with a specific argumentfalse
- 3By creating a repetitive patterntrue
- 4By choosing descriptive nounsfalse
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Answer : 3. "By creating a repetitive pattern"
Explanation :
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.
Q: A line is an undefined term because it 2080 05b5cc6a1e4d2b4197774cb10
5b5cc6a1e4d2b4197774cb10- Show AnswerHide Answer
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Answer :
Explanation :
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.
Q: Which one of the following scripts of ancient India was written from right to left ? 2080 05b5cc6dbe4d2b4197774e946
5b5cc6dbe4d2b4197774e946- 1Brahmifalse
- 2Kharoshtitrue
- 3Nandnagarifalse
- 4Sharadafalse
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Answer : 2. "Kharoshti"
Explanation :
Answer: B) Kharoshti Explanation: The Kharoshi script is an ancient script used by the ancient Gandhara culture of South Asia primarily in modern-day Afghanistan and Pakistan to write the Gandhari language (a dialect of Prakrit) and the Sanskrit language.
Q: 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 05b5cc6dfe4d2b4197774eaf3
5b5cc6dfe4d2b4197774eaf3- 111 monthsfalse
- 29 monthsfalse
- 37 monthsfalse
- 410 monthstrue
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Answer : 4. "10 months"
Explanation :
Answer: D) 10 months Explanation: 7x5: 5xk = 7:10k = 10 months
Q: Arun has certain number of books. It is not less than 15 and not more than 30. If he wants to give these books equally to 2 of his friends, then 1 book will remain. If he wants to give these books equally to 3 of his friends, then 2 books will remain. If he wants to give these books equally to 4 of his friends, then 3 books will remain. What is the number of books he had ? 2078 05b5cc718e4d2b4197774f4a4
5b5cc718e4d2b4197774f4a4- 119false
- 223true
- 317false
- 415false
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Answer : 2. "23"
Explanation :
Answer: B) 23 Explanation: If he wants to give these books equally to 2 of his friends, then 1 book will remain, it means possible number of books = 15,17,19,21,23,25,27,29If he wants to give these books equally to 3 of his friends, then 2 books will remain, it means possible number of books = 17,20,23,26,29If he wants to give these books equally to 4 of his friends, then 3 book will remain, it means possible number of books = 15,19,23,27common number is only 23 so it will be answer

