IIT JEE Practice Question and Answer
8Q: The average weight of 45 passengers in a bus is 52 kg. 5 of them whose average weight is 48 kg leave the bus and other 5 passengers whose average weight is 54 kg join the bus at the same stop. What is the new average weight of the bus? 5518 05b5cc6abe4d2b4197774d06c
5b5cc6abe4d2b4197774d06c- 154.21 kgsfalse
- 251.07 kgsfalse
- 352.66 kgstrue
- 453.45 kgsfalse
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Answer : 3. "52.66 kgs"
Explanation :
Answer: C) 52.66 kgs Explanation: Given total number of passengers in the bus = 45 First average weight of 45 passengers = 52 kgs Average weight of 5 passengers who leave bus = 48 Average weight of 5 passengers who joined the bus = 54 Therefore, the net average weight of the bus is given by = 45 x 52 - 5 x 48 + 5 x 5445 = 237045= 1583= 52.66 kgs.
Q: Hari Ram’s present age is three times his son’s present age and two fifth of his father’s present age. The average of the present age of all of them is 46 years. What is the difference between Hari Ram’s son’s present age and Hari Ram’s father’s present age? 5515 05b5cc6b7e4d2b4197774d5d8
5b5cc6b7e4d2b4197774d5d8- 144 yrsfalse
- 256 yrsfalse
- 367 yrsfalse
- 478 yrstrue
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Answer : 4. "78 yrs"
Explanation :
Answer: D) 78 yrs Explanation: Let Hari Ram's present age = x Then, his son's age = x/3 Father's age = 5x/2 x + x3 + 52x3 = 46=> x = 36 yrs Now the required difference = 52x36 - 363 = 78 yrs
Q: Find the wrong number from the following series ?7 18 40 106 183 282 403 5487 05b5cc736e4d2b4197774f846
5b5cc736e4d2b4197774f846- 118false
- 2183false
- 340true
- 4106false
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Answer : 3. "40"
Explanation :
Answer: C) 40 Explanation: The given series follows the rule,+(11x1), +(11x3), +(11x5), +(11x7), +(11x9),.... So starting from 7, 7 + 11 = 18, 18 + 33 = 51, 51 + 55 = 106, ...So wrong number is 40 which is to be 51.
Q: Which Word Does Not Belong with the Others 5480 05b5cc6b0e4d2b4197774d2c1
5b5cc6b0e4d2b4197774d2c1- 1VDUfalse
- 2Speakersfalse
- 3Plotterfalse
- 4Joysticktrue
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Answer : 4. "Joystick"
Explanation :
Answer: D) Joystick Explanation: Here Joystick is the word doesn't belong with the others. Because Except Joystick all others are Output Devices whereas Joystick is Input Device. VDU - Visual Display Unit - Monitor to display Speakers - Output sound Plotter - used to produce single or multiple colored images.
Q: Onion Eating Festival is celebrated in which country ? 5479 05b5cc6bfe4d2b4197774da0f
5b5cc6bfe4d2b4197774da0f- 1Swedenfalse
- 2Thailandfalse
- 3New Delhifalse
- 4Spaintrue
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Answer : 4. "Spain"
Explanation :
Answer: D) Spain Explanation: Sweden - Potato Festival Thailand - Vegetarian Festival New Delhi - International Mango Festival Spain - Onion Eating Festival
Q: Two boys and a girl can do a work in 5 days, while a boy and 2 girls can do it in 6 days. If the boy is paid at the rate of 28$ a week, what should be the wages of the girl a week ? 5476 05b5cc74ae4d2b4197774faa4
5b5cc74ae4d2b4197774faa4- 124 $false
- 222 $false
- 316 $true
- 414 $false
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Answer : 3. "16 $"
Explanation :
Answer: C) 16 $ Explanation: Let the 1 day work of a boy=b and a girl=g, then2b + g = 1/5 ---(i) andb + 2g = 1/6 ---(ii)On solving (i) & (ii), b=7/90, g=2/45As payment of work will be in proportion to capacity of work and a boy is paid $ 28/week, so a girl will be paid 28×245790 = 16 $.
Q: Find the odd man out of the number series? 18, 37, 76, 155, 314, 635 5474 05b5cc6a5e4d2b4197774cce0
5b5cc6a5e4d2b4197774cce0- 137false
- 2155false
- 3314false
- 4635true
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Answer : 4. "635"
Explanation :
Answer: D) 635 Explanation: Given Number series is 18 37 76 155 314 635 follows a pattern that, 18 18 x 2 +1 = 37 37 x 2 +2 = 76 76 x 2 +3 = 155 155 x 2 +4 = 314 314 x 2 +5 = 633 not 635 Hence, the odd man is 635.
Q: Biped : Quadruped :: Ostrich : ? 5467 05b5cc6b3e4d2b4197774d428
5b5cc6b3e4d2b4197774d428- 1Cattrue
- 2Rabbitfalse
- 3Tortoisefalse
- 4Ratfalse
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Answer : 1. "Cat"
Explanation :
Answer: A) Cat Explanation: A biped is an animal that uses two legs for walking and the quadrupeds are animals that use four legs for walking. From the Given options, Cat only have 4 legs. So Biped : Quadruped :: Ostrich : Cat.

