IIT JEE Practice Question and Answer

Q: Find the wrong number in the given series :26, 20, 16, 11, 8, 6, 5 1887 0

  • 1
    5
    Correct
    Wrong
  • 2
    26
    Correct
    Wrong
  • 3
    11
    Correct
    Wrong
  • 4
    16
    Correct
    Wrong
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Answer : 4. "16"
Explanation :

Answer: D) 16 Explanation: 26 - 6 = 20 20 - 5 = 15 15 - 4 = 11 11 - 3 = 8 8 - 2 = 6 6 - 1 = 5 Therefore, 16 is wrong number.

Q: What will come in place of the question mark(?) in the following question ? 56% of 870 + 82% of 180 = 32% of 90 + ? 1887 0

  • 1
    777
    Correct
    Wrong
  • 2
    666
    Correct
    Wrong
  • 3
    606
    Correct
    Wrong
  • 4
    789
    Correct
    Wrong
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Answer : 3. "606"
Explanation :

Answer: C) 606 Explanation: 56% of 870 = 56x870/100 = 487.20 82% of 180 = 82x180/100 = 147.60 32% of 90 = 32x90/100 487.20 + 147.6 - 28.8  =  ? ? = 634.8  - 28.8 ? = 606.

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Answer : 1. "Only a follows"
Explanation :

Answer: A) Only a follows Explanation: The problem faced, by the airlines and cargo agents is the non availability of cargo space. Therefore, right course of action is to combat the problem.

Q: Choose what replaces '?' in the following figure ? 1886 0

  • 1
    Q
    Correct
    Wrong
  • 2
    O
    Correct
    Wrong
  • 3
    M
    Correct
    Wrong
  • 4
    N
    Correct
    Wrong
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Answer : 4. "N"
Explanation :

Answer: D) N Explanation: The alphabetical value of the letters in the left hand column follows through the sequence of Prime Numbers, with the letters in the right hand column representing the corresponding reverse alphabetical values. So, M = Reverse of M = N.

Q: Someone who loans money is called 1885 0

  • 1
    Lender
    Correct
    Wrong
  • 2
    Borrower
    Correct
    Wrong
  • 3
    Investee
    Correct
    Wrong
  • 4
    Investor
    Correct
    Wrong
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Answer : 1. "Lender"
Explanation :

Answer: A) Lender Explanation: Someone who receives money in exchange for a promise to pay it back later is called a borrower1, and the person making the loan is the lender.

Q: From the given series of numbers, if half of the second highest number is subtracted from the third highest number, what will be the value ? 519 328 746 495 837 1885 0

  • 1
    146
    Correct
    Wrong
  • 2
    203
    Correct
    Wrong
  • 3
    345
    Correct
    Wrong
  • 4
    96
    Correct
    Wrong
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Answer : 1. "146"
Explanation :

Answer: A) 146 Explanation: From the given series of numbers, if half of the second highest number is subtracted from the third highest number, what will be the value ? Now arranging the given numbers in descending order.837 746 519 495 328 519 - 746/2 = 519 - 373 = 146.

Q: A wholesale dealer allows a discount of 20 % on the marked price to the retailer. The retailer sells at 5% below the marked price. If the customer pays Rs.19 for an article, what profit is made by the retailer on it ? 1885 0

  • 1
    Rs. 4
    Correct
    Wrong
  • 2
    Rs. 3
    Correct
    Wrong
  • 3
    Rs. 5
    Correct
    Wrong
  • 4
    Rs. 1
    Correct
    Wrong
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Answer : 2. "Rs. 3"
Explanation :

Answer: B) Rs. 3 Explanation: Let wholesaler dealers marked price = 100%, Retailer's C.P = 80% And the retailer sells at 5% less than the marked price => S.P = 95%If S.P of 95% of the retailer costs Rs.19 to customer,so its C.P of 80% will cost 80 x 19/95 = 16 Profit made by the retailer = 19-16 =  Rs.3

Q: A flagstaff 17.5 m high casts a shadow of length 40.25 m. What will be the height of a building, which casts a shadow of length 28.75 m under similar conditions ? 1883 1

  • 1
    14 cm
    Correct
    Wrong
  • 2
    13.5 cm
    Correct
    Wrong
  • 3
    12.5 cm
    Correct
    Wrong
  • 4
    11.4 cm
    Correct
    Wrong
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Answer : 3. "12.5 cm"
Explanation :

Answer: C) 12.5 cm Explanation: Let the required height of the building be x meter More shadow length, More height(direct proportion) Hence we can write as (shadow length) 40.25 : 28.75 :: 17.5 : x⇒ 40.25 × x = 28.75 × 17.5⇒ x = 28.75 × 17.5/40.25= 2875 × 175/40250= 2875 × 7/1610= 2875/230= 575/46= 12.5 cm

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