IIT JEE Practice Question and Answer
8Q: In 1990 a person is 15 years old. In 2000 that same person is 5 years old. How can this be possible? 1720 05b5cc6b1e4d2b4197774d322
5b5cc6b1e4d2b4197774d322- Show AnswerHide Answer
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Answer :
Explanation :
It can be possible in only B.C. i.e, Before Christ. That was about 2000 years ago. Given In 1990 B.C = 2000 + 1990 = 3990 years ago, a person is 15 years Old => In 1995 B.C = 2000 + 1995 = 3995 years ago, the same person will be 10 years Old Therefore, In 2000 B.C = 2000 + 2000 = 4000 years ago, the same person will be 5 years Old.
Q: A person walking 6/7 of his usual rate is 30 minutes late. What is his usual time ? 1719 05b5cc720e4d2b4197774f62c
5b5cc720e4d2b4197774f62c- 12 hrs 50 minfalse
- 23 hrs 25 minfalse
- 33 hrstrue
- 42 hrs 5 minfalse
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Answer : 3. "3 hrs"
Explanation :
Answer: C) 3 hrs Explanation: Let t be the usual time. If the usual rate is 1 unit, then the unusual rate is 6/7.Balance by the distance,1 x t = (6/7)(t + 30)7t = 6(t + 30)we get t as,t = 180 minutes = 3 hrs.
Q: Solve the MathPuzzle Challenge ? 1718 05b5cc6c6e4d2b4197774ddff
5b5cc6c6e4d2b4197774ddff- 14!false
- 25!false
- 36!false
- 4Can't be determinedtrue
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Answer : 4. "Can't be determined"
Explanation :
Answer: D) Can't be determined Explanation: NUMERICAL has 9 positions in which 2, 4, 6, 8 are even positions. And it contains 5 consonents i.e, N, M, R, C & L. Hence this cannot be done as 5 letters cannot be placed in 4 positions. Therefore, Can't be determined.
Q: Internet was started in India on ? 1718 05b5cc6c8e4d2b4197774def1
5b5cc6c8e4d2b4197774def1- 18 August,1994false
- 215 August,1995true
- 39 August,1995false
- 47 August,1996false
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Answer : 2. "15 August,1995"
Explanation :
Answer: B) 15 August,1995 Explanation:
Q: Compared to land, the open oceans 1718 05b5cc69de4d2b4197774c951
5b5cc69de4d2b4197774c951- 1are rich in silica and ironfalse
- 2are nutrient-poor environmentstrue
- 3contain unlimited nitrogenfalse
- 4are nutrient-rich environmentsfalse
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Answer : 2. "are nutrient-poor environments"
Explanation :
Answer: B) are nutrient-poor environments Explanation:
Q: The difference between two numbers is 3355. When the larger number is divided by the smaller one, the quotient is 6 and the remainder is 15. The smaller number and larger number respectively ? 1718 05b5cc754e4d2b4197774fb81
5b5cc754e4d2b4197774fb81- 1546, 3901false
- 2415, 3770false
- 3668, 4023true
- 4404, 3759false
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Answer : 3. "668, 4023"
Explanation :
Answer: C) 668, 4023 Explanation: Let the smaller number be k.Then, larger number = (3355 + k)Therefore 3355 + k = (6k + 15)‹=› 5k = 3340‹=› k = 668. Therefore, the smaller number k = 668 and now the larger number = 3355+668 = 4023.
Q: Guess the Missing number in the Number Challenge ? 1716 05b5cc6d1e4d2b4197774e3ed
5b5cc6d1e4d2b4197774e3ed- 18false
- 232false
- 344false
- 464true
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Answer : 4. "64"
Explanation :
Answer: D) 64 Explanation: The logic in the challenge is 81x6 = 9x6 = 54 144x7=84 Similarly, 64x8 = 8x8 = 64.
Q: Who is the present Attorney General of India? 1715 05b5cc6aee4d2b4197774d192
5b5cc6aee4d2b4197774d192- 1K.K. Venugopaltrue
- 2Mukul Rohatgifalse
- 3Ranjit Kumarfalse
- 4P. P. Malhotrafalse
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Answer : 1. "K.K. Venugopal"
Explanation :
Answer: A) K.K. Venugopal Explanation: K.K. Venugopal is the new Attorney General of India since 2017. Kottayan Katankot Venugopal, known generally to us as K. K. Venugopal is an eminent Indian constitutional lawyer and a senior advocate in the Supreme Court of India. He was preceded by Mukul Rohatgi.

