Practice Question and Answer

Q:

A series is given, with one term missing. Choose the correct alternative from the given options that will complete the series.
51    (?)    57      65      81    

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  • 1
    53
    Correct
    Wrong
  • 2
    54
    Correct
    Wrong
  • 3
    52
    Correct
    Wrong
  • 4
    51
    Correct
    Wrong
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Answer : 1. "53 "

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 ? 2474 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:

Ayonika Paul, an Indian Player belongs to which sports?

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  • 1
    Boxing
    Correct
    Wrong
  • 2
    Shooting
    Correct
    Wrong
  • 3
    Wrestler
    Correct
    Wrong
  • 4
    Athlete
    Correct
    Wrong
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Answer : 2. "Shooting"

Q:

Three numbers are in the ratio 5: 7: 12. If the sum of the first and the third numbers is greater than the second number by 50. The sum of the three numbers is 

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  • 1
    95
    Correct
    Wrong
  • 2
    85
    Correct
    Wrong
  • 3
    125
    Correct
    Wrong
  • 4
    120
    Correct
    Wrong
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Answer : 4. "120 "

Q:

What day of the week will be on 1st January 2033?

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  • 1
    Saturday
    Correct
    Wrong
  • 2
    Monday
    Correct
    Wrong
  • 3
    Sunday
    Correct
    Wrong
  • 4
    Tuesday
    Correct
    Wrong
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Answer : 1. "Saturday"

Q:

What are Lappa, Lappi, Kiran and Gokharu?

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  • 1
    Characters in Rajasthani film 'Sasu maa'
    Correct
    Wrong
  • 2
    Different varieties of lace/gota
    Correct
    Wrong
  • 3
    Names of sherwani
    Correct
    Wrong
  • 4
    Varieties of higher yielding moth (kidney bean, phaseolus aconite folius)
    Correct
    Wrong
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Answer : 2. "Different varieties of lace/gota "
Explanation :

Lappa, Lappi, Kiran, Bankali, Bijiya, Mukesh and Champakali are the types of Gota. Khandela (Sikar) and Bhinay (Ajmer) are the main centers of Gota manufacturing. Artistic ivory bangles are made in Jaipur. The work of digging and artistic carving on brass utensils is called Moradabadi art.

Q:

if the square root of 841 is 29, then square root of 0.0000084 is equal to: 

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  • 1
    0.029
    Correct
    Wrong
  • 2
    0.0029
    Correct
    Wrong
  • 3
    0.00029
    Correct
    Wrong
  • 4
    0.29
    Correct
    Wrong
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Answer : 2. "0.0029"

Q:

Computer process data into information by working exclusively with: 

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  • 1
    Characters
    Correct
    Wrong
  • 2
    Numbers
    Correct
    Wrong
  • 3
    Multimedia
    Correct
    Wrong
  • 4
    Words
    Correct
    Wrong
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Answer : 2. "Numbers "

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