IIT JEE Practice Question and Answer
8Q: Simplify 413 + 215 + 414 = ? 1201 05b5cc6afe4d2b4197774d235
5b5cc6afe4d2b4197774d235- 110 47/60true
- 211 45/73false
- 311 47/36false
- 410 35/48false
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Answer : 1. "10 47/60"
Explanation :
Answer: A) 10 47/60 Explanation: The given equation is in Mixed fraction. Now to solve this type of fractions, 413 + 215 + 414 =?? = 4 + 2 + 4 + 13 + 15 + 14 ? = 10 + 4760? = 104760
Q: Which results in an increase in power? 1200 05b5cc669e4d2b4197774bf87
5b5cc669e4d2b4197774bf87- 1doing more work in less time.true
- 2doing less work in more time.false
- 3doing less work in less time.false
- 4doing more work in more time.false
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Answer : 1. "doing more work in less time."
Explanation :
Answer: A) doing more work in less time. Explanation: Doing more work in less time, results in an increase in power to do a work.
Q: In how many different ways could couples be picked from 6 men and 9 women ? 1198 05b5cc728e4d2b4197774f728
5b5cc728e4d2b4197774f728- 126false
- 254true
- 352false
- 428false
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Answer : 2. "54"
Explanation :
Answer: B) 54 Explanation: Number of mens = 8 Number of womens = 5 Different ways could couples be picked = C16× 9C1 = 9 x 6 = 54 ways.
Q: Name the body that has recently announced a plan to promote micro-enterprises in 115 aspirational districts across the country after tying up with Common Service Centre (CSC). 1198 05b5cc697e4d2b4197774c5e0
5b5cc697e4d2b4197774c5e0- 1SEBIfalse
- 2C). A) SEBI B)false
- 3. A) SEBI B) RBI C) SIDBItrue
- 4IRDAIfalse
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Answer : 3. ".
A) SEBI
B) RBI
C) SIDBI"
Explanation :
Answer: C) SIDBI Explanation: Small Industries and Development Bank of India (SIDBI) announced a plan to promote micro-enterprises in 115 aspirational districts across the country. It has tied up with Common Service Centre (CSC).
Q: In a plane 8 points are colliner out of 12 points, then the number of triangles we get with those 12 points is 1195 05b5cc7b4e4d2b419777508ab
5b5cc7b4e4d2b419777508ab- 120false
- 2160false
- 3164true
- 4220false
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Answer : 3. "164"
Explanation :
Answer: C) 164 Explanation: For a triangle, we need 3 non-collinear points. So with 12 points (when all the 12 are such that any three non-collinear is12C3. But among them 8 points are collinear. If all these 8 points are different we get 8C3 triangles as they are collinear. In 12C3 triangles, we do not get 8C3 triangles Therefore, The number of triangles we get = 12C3-8C3 = 164
Q: A train travelling at 48 kmph crosses another train, having half its length and travelling in opposite direction at 42 kmph, in 12 sec. It also covers a bridge in 45 sec. Find the length of the bridge ? 1191 05b5cc6c4e4d2b4197774dcc3
5b5cc6c4e4d2b4197774dcc3- 1250 mtsfalse
- 2400 mtstrue
- 3320 mtsfalse
- 4390 mtsfalse
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Answer : 2. "400 mts"
Explanation :
Answer: B) 400 mts Explanation: Let the length of the 1st train = L mts Speed of 1st train = 48 kmph Now the length of the 2nd train = L/2 mts Speed of 2nd train = 42 kmph Let the length of the bridge = D mts Distance = L + L/2 = 3L/2 Relative speed = 48 + 42 = 90 kmph = 90 x 5/18 = 25 m/s(opposite) Time = 12 sec => 3L/2x25 = 12 => L = 200 mts Now it covers the bridge in 45 sec => distance = D + 200 Time = 45 sec Speed = 48 x5/18 = 40/3 m/s => D + 200/(40/3) = 45 => D = 600 - 200 = 400 mts Hence, the length of the bridge = 400 mts.
Q: Find the Missing Numbers in the given Number Puzzle ? 1190 05b5cc6c9e4d2b4197774df74
5b5cc6c9e4d2b4197774df74- 1169 & 81true
- 267 & 121false
- 364 & 115false
- 470 & 110false
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Answer : 1. "169 & 81"
Explanation :
Answer: A) 169 & 81 Explanation: Observe that in each column, square of sum of digits in the first row = Respective second row elements. In the same way, square of sum of digits in the second row = Respective third row elements. => 6+42=102=100 => 4+92=132=169 => 8+12=92=81.
Q: Name the U.S. war between the north and the south? 1190 05b5cc639e4d2b4197774ba72
5b5cc639e4d2b4197774ba72- 1American Civil Wartrue
- 2Colonial warsfalse
- 3War of Independencefalse
- 4Post-Civil Warfalse
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Answer : 1. "American Civil War"
Explanation :
Answer: A) American Civil War Explanation: The American Civil War has been known by a number of names since it began in 1861. In most East Asian languages, the war is called "Battle between North and South side of the United States" or more commonly as "American (U.S.) North–South War", depending on the individual language.

