IIT JEE Practice Question and Answer

Q: On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is  ? 1570 0

  • 1
    476190476
    Correct
    Wrong
  • 2
    48617
    Correct
    Wrong
  • 3
    47619
    Correct
    Wrong
  • 4
    4587962
    Correct
    Wrong
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Answer : 3. "47619"
Explanation :

Answer: C) 47619 Explanation: By hit and trail, we find that 47619 x 7 = 333333. 7) 333333 (47619    333333----------------        0 And 476190476 x 7 = 3333333333 but smallest number is 47619.

Q: KYC norms for e-wallets made mandatory from 1570 0

  • 1
    March 31
    Correct
    Wrong
  • 2
    March 1
    Correct
    Wrong
  • 3
    April 1
    Correct
    Wrong
  • 4
    May 1
    Correct
    Wrong
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Answer : 2. "March 1"
Explanation :

Answer: B) March 1 Explanation:

Q: An item is sold at a loss of 10%. Had it sold for Rs. 9 more, a profit of 25/2% would have gained. What is the cost price of the item? 1570 0

  • 1
    Rs. 90
    Correct
    Wrong
  • 2
    Rs. 75
    Correct
    Wrong
  • 3
    Rs. 55
    Correct
    Wrong
  • 4
    Rs. 40
    Correct
    Wrong
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Answer : 4. "Rs. 40"
Explanation :

Answer: D) Rs. 40 Explanation: Let the cost price of the item = Rs. 50 Sold at 10% loss => for Rs. 50 loss  S.P = Rs. 45 From the  given data, 25/2 % gain if it is sold at Rs. 9 more 56.25 - 45 = 9 => 11.25 = 9 => 22.5 = 18 => 45 = 36 => 50 = ? => C.P = 50 x 3645 = 40   Hence, the Cost price of the item = Rs. 40.

Q: Express 0.875 and 0.375 as a Fraction. 1570 0

  • 1
    3/11 & 7/11
    Correct
    Wrong
  • 2
    7/9 & 9/13
    Correct
    Wrong
  • 3
    7/8 & 3/8
    Correct
    Wrong
  • 4
    7/9 & 9/11
    Correct
    Wrong
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Answer : 3. "7/8 & 3/8"
Explanation :

Answer: C) 7/8 & 3/8 Explanation: Given 0.875 and 0.375 0.875 :: After decimal point there are 3 digits 875 Now, mutiply and divide 0.875 with 1000 0.875 x 10001000 = 8751000 Now, this can be reduced to fraction 78Therefore, 0.875 as fraction = 78 Similarly, 0.375 ::  After decimal point there are 3 digits 375 Now, mutiply and divide 0.375 with 1000 0.375 x 10001000 = 3751000Now, this can be reduced to fraction 38Therefore, 0.375 as fraction = 38

Q: In how many different ways can the letters of the word 'POVERTY' be arranged ? 1570 0

  • 1
    2520
    Correct
    Wrong
  • 2
    5040
    Correct
    Wrong
  • 3
    1260
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 2. "5040"
Explanation :

Answer: B) 5040 Explanation: The 7 letters word 'POVERTY' be arranged in 7P7 ways = 7! = 5040 ways.

Q: What one word has the most letters in it? 1569 0

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Answer :
Explanation :

ALPHABET is the only has the most letters in it.   Alphabet has all the 26 letters from A - Z.    Hence, ALPHABET is one word that has the most letters in it.

Q: Which country have declared 2020 'Unique Year for Space Sector' ? 1569 0

  • 1
    United Arab Emirates
    Correct
    Wrong
  • 2
    England
    Correct
    Wrong
  • 3
    USA
    Correct
    Wrong
  • 4
    India
    Correct
    Wrong
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Answer : 1. "United Arab Emirates"
Explanation :

Answer: A) United Arab Emirates Explanation:

Q: The capacity of a water heater is measured in 1568 0

  • 1
    Gallons
    Correct
    Wrong
  • 2
    Liters
    Correct
    Wrong
  • 3
    Meters
    Correct
    Wrong
  • 4
    Both A & B
    Correct
    Wrong
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Answer : 4. "Both A & B"
Explanation :

Answer: D) Both A & B Explanation: The capacity of a water heater is measured in Gallons or Liters. In the USA, it is measured in Gallons and in India, we measure it in Liters. Hence, if the capacity of the water heater is 15 gallons or 15 liters, then it says that it can hold 15 gallons or 15 liters of water.

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