GATE Practice Question and Answer

Q: That which cannot be corrected 2598 0

  • 1
    Incorrigible
    Correct
    Wrong
  • 2
    Illegible
    Correct
    Wrong
  • 3
    Illegal
    Correct
    Wrong
  • 4
    Indelible
    Correct
    Wrong
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Answer : 1. "Incorrigible"
Explanation :

Answer: A) Incorrigible Explanation: The One-word substitute for That which cannot be corrected is Incorrigible.

Q: 7, 11, 19, 35, ? Find the next number in the given number series? 2595 0

  • 1
    131
    Correct
    Wrong
  • 2
    94
    Correct
    Wrong
  • 3
    83
    Correct
    Wrong
  • 4
    67
    Correct
    Wrong
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Answer : 4. "67"
Explanation :

Answer: D) 67 Explanation: Here the given series 7, 11, 19, 35, ? follows a pattern that (x 2 - 3) i.e, 7 7 x 2 - 3 = 11 11 x 2 - 3 = 19 19 x 2 - 3 = 35 35 x 2 - 3 = 67 67 x 2 - 3 = 131   Hence the next number in the given number series is 67.

Q: If log72 = m, then log4928 is equal to ? 2590 0

  • 1
    1/(1+2m)
    Correct
    Wrong
  • 2
    (1+2m)/2
    Correct
    Wrong
  • 3
    2m/(2m+1)
    Correct
    Wrong
  • 4
    (2m+1)/2m
    Correct
    Wrong
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Answer : 2. "(1+2m)/2"
Explanation :

Answer: B) (1+2m)/2 Explanation: log4928 = 12log77×4   = 12+122log72= 12+log72= 12 + m= 1+2m2.

Q: कौन सी इकाई अस्थायी रूप से डेटा रखती है? 2590 0

  • 1
    सैकेंडरी स्टोरेज यूनिट
    Correct
    Wrong
  • 2
    आउटपुट यूनिट
    Correct
    Wrong
  • 3
    प्राइमरी मेमोरी यूनिट
    Correct
    Wrong
  • 4
    इनपुट यूनिट
    Correct
    Wrong
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Answer : 3. "प्राइमरी मेमोरी यूनिट"
Explanation :

Answer: C) प्राथमिक मेमोरी यूनिट स्पष्टीकरण: मेमोरी कंप्यूटर का वह भाग है जो ALU द्वारा संसाधित किए जाने से पहले और बाद में अस्थायी रूप से डेटा और निर्देश रखता है। मेमोरी को प्राइमरी स्टोरेज, प्राइमरी मेमोरी, मेन स्टोरेज, इंटरनल स्टोरेज और मेन मेमोरी के रूप में भी जाना जाता है। निर्माता अक्सर RAM शब्द का उपयोग करते हैं, जिसका अर्थ है रैंडम-एक्सेस मेमोरी।

Q: Fill in the blank with suitable preposition in the following sentence.   ____ the two I prefer tea. 2583 0

  • 1
    From
    Correct
    Wrong
  • 2
    In
    Correct
    Wrong
  • 3
    Between
    Correct
    Wrong
  • 4
    Among
    Correct
    Wrong
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Answer : 3. "Between"
Explanation :

Answer: C) Between Explanation: Between the two I prefer tea is the correct sentence with suitable preposition.

Q: A box contains 4 different black balls, 3 different red balls and 5 different blue balls. In how many ways can the balls be selected if every selection must have at least 1 black ball and one red ball ? 2581 0

  • 1
    24 - 1
    Correct
    Wrong
  • 2
    2425-1
    Correct
    Wrong
  • 3
    (24-1)(23-1)25
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 3. "(24-1)(23-1)25"
Explanation :

Answer: C) C Explanation: It is explicitly given that all the 4 black balls are different, all the 3 red balls are different and all the 5 blue balls are different. Hence this is a case where all are distinct objects.   Initially let's find out the number of ways in which we can select the black balls. Note that at least 1 black ball must be included in each selection.   Hence, we can select 1 black ball from 4 black ballsor 2 black balls from 4 black balls.or 3 black balls from 4 black balls.or 4 black balls from 4 black balls.   Hence, number of ways in which we can select the black balls   = 4C1 + 4C2 + 4C3 + 4C4= 24-1 ........(A)   Now let's find out the number of ways in which we can select the red balls. Note that at least 1 red ball must be included in each selection.   Hence, we can select 1 red ball from 3 red ballsor 2 red balls from 3 red ballsor 3 red balls from 3 red balls   Hence, number of ways in which we can select the red balls= 3C1 + 3C2 + 3C3=23-1........(B)   Hence, we can select 0 blue ball from 5 blue balls (i.e, do not select any blue ball. In this case, only black and red balls will be there)or 1 blue ball from 5 blue ballsor 2 blue balls from 5 blue ballsor 3 blue balls from 5 blue ballsor 4 blue balls from 5 blue ballsor 5 blue balls from 5 blue balls.   Hence, number of ways in which we can select the blue balls= 5C0 + 5C1 + 5C2 + … + 5C5= 25..............(C)   From (A), (B) and (C), required number of ways=  2524-123-1

Q: The circumference of a circular base of Cylinder is 44 cm and its hight is 15 cm. Then the volume of the cylinder is? 2579 0

  • 1
    2759 cub. cm
    Correct
    Wrong
  • 2
    2247 cub. cm
    Correct
    Wrong
  • 3
    2614 cub. cm
    Correct
    Wrong
  • 4
    2311 cub. cm
    Correct
    Wrong
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Answer : 4. "2311 cub. cm"
Explanation :

Answer: D) 2311 cub. cm Explanation: Given Circumference of a circular base of a cylinder = 44 cm We know that Circumference of a circle = 2πr = 44⇒r = 22π Now given the height of a cylinder h = 15 cm Volume of a cylinder V = πr2h = π22π215 = 22 x 22 x 153.14 = 2311 cm3.

Q: Size of the primary memory of a pc ranges between 2579 0

  • 1
    256 kb to 640 kb
    Correct
    Wrong
  • 2
    64 kb to 256 kb
    Correct
    Wrong
  • 3
    256 kb to 512 kb
    Correct
    Wrong
  • 4
    2 kb to 8 kb
    Correct
    Wrong
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Answer : 1. "256 kb to 640 kb"
Explanation :

Answer: A) 256 kb to 640 kb Explanation: Size of the primary memory of a PC ranges between 256 KB to 640 KB.

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