IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Read the arrangement carefully and give the answer of following questions ? K$23DBE8HM4@5JF4%K1+WR#AA*415 How many such symbols are there which is not immediately preceded by a letter but immediately followed by a number ? 3701 05b5cc6c5e4d2b4197774dd4b
5b5cc6c5e4d2b4197774dd4b- 11true
- 22false
- 33false
- 40false
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उत्तर : 1. "1"
व्याख्या :
Answer: A) 1 Explanation: Only one such symbol is there in the given arrangement. It is 4@5.
प्र: Two boys are playing on a ground. Both the boys are less than 10 years old. Age of the younger boy is equal to the cube root of the product of the age of the two boys. If we place the digit representing the age of the younger boy to the left of the digit representing the age of the elder boy, we get the age of the father of the younger boy. Similarly, we place the digit representing the age of the elder boy to the left of the digit representing the age of the younger boy and divide the figure by 2, we get the age of the mother of the younger boy. The mother of the younger boy is younger than his father by 3 years. Then, what are the ages of elder and younger boys ? 3700 05b5cc73ae4d2b4197774f8ce
5b5cc73ae4d2b4197774f8ce- 1E = 15 & Y = 3false
- 2E = 14 & Y = 12false
- 3E = 40 & Y = 22false
- 4E = 4 & Y = 2true
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उत्तर : 4. "E = 4 & Y = 2"
व्याख्या :
Answer: D) E = 4 & Y = 2 Explanation: Let the the age of the elder boy = E Let the the age of the younger boy = Y Given that Y = cube root of EY => Y3 = EY => E = Y2 .....(1)By the condition of number replacement the age of the father is YE The Mother's age = EY/2 But she is 3 years less than father => EY/2 + 3 = YE2YE = EY + 6 ......(2) Then now from the given options we can identify which satisfies the all the conditions. Here Y =2 and E = 4 satisfies all the conditions.
प्र: Find out which part of a sentence has an error and mark the answer corresponding to the appropriate letter (A, B, C). If a sentence is free from errors, mark (D) as the answer. He flew( 3693 05b5cc6d6e4d2b4197774e69d
5b5cc6d6e4d2b4197774e69d- 1/ over extensively(false
- 2C). If a sentence is free from errors, mark (D) as the answer. He flew(A) / over extensively(B)true
- 3. If a sentence is free from errors, mark (false
- 4as the answer. He flew(A) / over extensively(B) / the pacific last winter(C) / No error(D)false
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उत्तर : 2. "C). If a sentence is free from errors, mark (D) as the answer.
He flew(A) / over extensively(B)"
व्याख्या :
Answer: B) B Explanation: 'Extensively' is describing the verb 'flew' and should be placed after the verb and thus the correct phrase should be 'extensively over'. The error is in the second part of the sentence.
प्र: What word in the English language is always spelled incorrectly? 3686 05b5cc698e4d2b4197774c631
5b5cc698e4d2b4197774c631- 1Schezwanfalse
- 2Yorkerfalse
- 3Incorrectlytrue
- 4Psycologicallyfalse
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उत्तर : 3. "Incorrectly"
व्याख्या :
Answer: C) Incorrectly Explanation: INCORRECTLY is the only English word which is always spelled incorrectly.
प्र: If there are 150 questions in a 3 hr examination. Among these questions 50 are type A problems, which requires twice as much as time be spent on the rest of the type B problems. How many minutes should be spent on type A problems ? 3682 05b5cc74fe4d2b4197774fb1c
5b5cc74fe4d2b4197774fb1c- 175 minfalse
- 282 minfalse
- 390 mintrue
- 4101 minfalse
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उत्तर : 3. "90 min"
व्याख्या :
Answer: C) 90 min Explanation: Let X = Time taken for each of Type B Problems(100 Problems)And 2X = Time taken for each of Type A problems(50 problems) Total time period = 3hrs = 3 x 60min = 180 minutes 100X + 50(2X) = 180100X + 100X = 180200X = 180 min X = 180/200X = 0.90 min By convertiing into seconds, X = 0.90 x 60 secondsX = 54 sec So, time taken for Part A problems is = 54 x 2 x 50 = 5400 seconds= 5400/60sec = 90 minutes.
प्र: Which of the following is the primary purpose of the DSM? 3663 05b5cc68be4d2b4197774c36f
5b5cc68be4d2b4197774c36f- 1Understanding the causes of mental disordersfalse
- 2Placement of mental disorders in appropriate cultural contextfalse
- 3Diagnosis of mental disorderstrue
- 4Selection of appropriate psychological therapies for mental disordersfalse
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उत्तर : 3. "Diagnosis of mental disorders"
व्याख्या :
Answer: C) Diagnosis of mental disorders Explanation: The DSM is the Diagnostic and Statistical Manual of Mental Disorders; it is currently in its fifth edition. The DSM is published by the APA, American Psychiatric Association. It is a crucial resource in the fields of psychology and psychiatry.
प्र: The day before yesterday, I was 25 years old, and next year I will turn 28. How is it possible? 3658 05b5cc6a8e4d2b4197774ce66
5b5cc6a8e4d2b4197774ce66- उत्तर देखें
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उत्तर :
व्याख्या :
On carefully inspecting this question, one can understand that there are two days which are important and these are: A. My Birthday. B. The day when I am making this statement. If you think for a while, you will understand that such statements can be made only around the year’s end. So, if my birthday is on 31 December, then I will be making this statement on 1 January. I will further explain using the following example: 1. Consider that today is 01 January 2017. 2. Then, the day before yesterday was 30 December 2016 and according to the question I was 25 then. 3. Yesterday was 31 December 2016, which happens to be my birthday too (Woohoo!), and my age increases by one to become 26. 4. I will turn 27 on my birthday this year (31 December 2017). 5. I will turn 28 on my birthday next year (31 December 2018). Now, if you read the question again, it will make more sense: The day before yesterday(30 December 2016), I was 25 years old and next year(31 December 2018) I will be 28.
प्र: Smallest Taluk in Kerala State? 3656 05b5cc6afe4d2b4197774d24a
5b5cc6afe4d2b4197774d24a- 1Kunnathurtrue
- 2Eranadfalse
- 3Palakkadfalse
- 4Alappuzhafalse
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उत्तर : 1. "Kunnathur"
व्याख्या :
Answer: A) Kunnathur Explanation: Kunnathur is the Smallest Taluk in Kerala State. Taluk : In Kerala, the administrative divisions below the district are called Taluk. There are 77 Taluks in Kerala State. Eranad is the Largest Taluk in Kerala State. Palakkad is the Largest District in Kerala State. Alappuzha is the Smallest District in Kerala State.