Practice Question and Answer

Q: Let K and L be events on the same sample space, with P (K) = 0.8 and P (B) = 0.6. Are these two events are disjoint ? 1676 0

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    B) = 0.6. Are these two events are disjoint ? A)
    Correct
    Wrong
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    = 0.6. Are these two events are disjoint ? A) TRUE B) FALSE Answer & Explanation Answer: B) FALSE Explanation: These two events cannot be disjoint because P(K) + P(L) > 1. P(AꓴB) = P(
    Correct
    Wrong
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Answer : 2. "= 0.6. Are these two events are disjoint ? A) TRUE B) FALSE Answer & Explanation Answer: B) FALSE Explanation: These two events cannot be disjoint because P(K) + P(L) > 1. P(AꓴB) = P("
Explanation :

Answer: B) FALSE Explanation: These two events cannot be disjoint because P(K) + P(L) > 1. P(AꓴB) = P(A) + P(B) - P(AꓵB). An event is disjoint if P(A ꓵ B) = 0. If K and L are disjoint P(K ꓴ L) = 0.8 + 0.6 = 1.4 And Since probability cannot be greater than 1, these two mentioned events cannot be disjoint.

Q: A fair six-sided die is rolled twice. What is the probability of getting 4 on the first roll and not getting 6 on the second roll ? 1948 0

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    1/36
    Correct
    Wrong
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    5/36
    Correct
    Wrong
  • 3
    1/12
    Correct
    Wrong
  • 4
    1/9
    Correct
    Wrong
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Answer : 2. "5/36"
Explanation :

Answer: B) 5/36 Explanation: The two events mentioned are independent. The first roll of the die is independent of the second roll. Therefore the probabilities can be directly multiplied. P(getting first 4) = 1/6 P(no second 6) = 5/6 Therefore P(getting first 4 and no second 6) = 1/6 x 5/6 = 5/36

Q: Give an example for the use of volatile keyword in c++ ? 1332 0

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Answer :
Explanation :

Most of the times compilers will do optimization to the code to speed up the program. For example in the below code, int k = 15;while( k == 15) { // Do something} compiler may think that value of 'k' is not getting changed in the program and replace it with 'while(true)', which will result in an infinite loop. In actual scenario, the value of 'k' may be getting updated from outside of the program. Volatile keyword is used to tell compiler that the variable declared using 'volatile' may be used from outside the current scope, so that compiler won't apply any optimization. This matters only in case of multi-threaded applications. In the above example if variable 'k' was declared using volatile, compiler will not optimize it. In shot, value of the volatile variables will be read from the memory location directly.

Q: __________________will confer a doctorate on former sprint queen PT Usha, who missed a medal by a whisker at the 1984 Los Angeles Olympics. 1290 0

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    IIT, Kanpur
    Correct
    Wrong
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    IIT, Kharagpur
    Correct
    Wrong
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    IIT, Delhi
    Correct
    Wrong
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    IIT, Bombay
    Correct
    Wrong
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Answer : 1. "IIT, Kanpur"
Explanation :

Answer: A) IIT, Kanpur Explanation: The Indian Institute of Technology (IIT) Kanpur will confer a doctorate on former sprint queen PT Usha, who missed a medal by a whisker at the 1984, Los Angeles Olympics. The degree, Doctor of Science (honoris causa – a degree awarded as a mark of esteem) will be conferred on June 16 to mark the 50th convocation of the prestigious institute of the country. This is her second doctorate – in 2002, Kannur University had conferred D.Lit on her.

Q: 12 year old Padmalaya Nanda from _________has created history by becoming the youngest girl to bag the "Little Miss Universe Internet 2017". 1533 0

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    Haryana
    Correct
    Wrong
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    Gujarat
    Correct
    Wrong
  • 3
    Karnataka
    Correct
    Wrong
  • 4
    Odisha
    Correct
    Wrong
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Answer : 4. "Odisha"
Explanation :

Answer: D) Odisha Explanation: 12 year old Padmalaya Nanda from Odisha has created history by becoming the youngest girl to bag the two "Little Miss Universe Internet 2017" and "Little Miss Actress" crowns at the 'Little Miss Universe-2017' at port city of Batumi in Georgia. Padmalaya Nanda, who studies in the 8th standard at a school in Cuttack, Odisha, bagged the crowns at the finale of the little Universe 2017, held at port city of Batumi in Georgia on June 4, 2017.

Q: Which among the following temples of India is known as "Black Pagoda"  ? 5526 1

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    Brihadeeshwara Temple, Tanjore
    Correct
    Wrong
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    Sun Temple, Konark
    Correct
    Wrong
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    Meenakshi Temple, Madurai
    Correct
    Wrong
  • 4
    Jagannath Temple, Puri
    Correct
    Wrong
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Answer : 2. "Sun Temple, Konark"
Explanation :

Answer: B) Sun Temple, Konark Explanation: Konark Sun Temple is a 13th century temple of Odisha, built by Narasimhadeva I of the Eastern Ganga Dynasty. It is also known as Black Pagoda. It’s a World Heritage Site. It is considered as architectural marvel for which Odisha, best known worldwide.

Q: The Famous personality best known for the instrument Tabla  ? 2013 0

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    Bundu Khan
    Correct
    Wrong
  • 2
    Zakir Hussain
    Correct
    Wrong
  • 3
    P. Mani Iyer
    Correct
    Wrong
  • 4
    Ravi Sankar
    Correct
    Wrong
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Answer : 2. "Zakir Hussain"
Explanation :

Answer: B) Zakir Hussain Explanation: Zakir Hussain is best known for the instrument Tabla. Bundu Khan is known for Sarangi P. Mani Iyer is known for Mridangam Ravi Sankar is known for Sitar

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Answer : 3. "Neither A nor B follows"
Explanation :

Answer: C) Neither A nor B follows Explanation: There is no indication that Indian scientists are incapable of developing enzymes. There could be any number of reasons why Indian scientists used Russian enzymes. So conclusion A does not follow. In addition, cost is not discussed in the passage at all. There is no mention of a correlation between cost and extraction of proteins. Thus, conclusion B does not follow either.

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