Quiz Discussion

The students in a class are seated, according to their marks in the previous examination. Once, it so happens that four of the students got equal marks and therefore the same rank. To decide their seating arrangement, the teacher wants to write down all possible arrangements one in each of separate bits of paper in order to choose one of these by lots. How many bits of paper are required?

Course Name: Quantitative Aptitude

  • 1]

    24

  • 2]

    12

  • 3]

    36

  • 4]

    48

Solution
No Solution Present Yet

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# Quiz
1
Discuss

If A, B and C are mutually exclusive and exhaustive events of a random experiment such that P(B)=3/2​P(A) and P(C)=1/2​P(B), then P(A∪C)=

  • 1]

    3/13

  • 2]

    6/13

  • 3]

    7/13

  • 4]

    10/13

Solution
2
Discuss

 

In how many ways can the letters of the word 'LEADER' be arranged?

  • 1]

    360

  • 2]

    720

  • 3]

    120

  • 4]

    None Of These

Solution
3
Discuss

Ten participants are participating in a competition. In how many ways can the first three prizes be won?

  • 1]

    920

  • 2]

    680

  • 3]

    720

  • 4]

    820

Solution
4
Discuss

There are three rooms in a motel: one single, one double, and one for four persons. How many ways are there to house seven persons in these rooms?

  • 1]

    7! / 1! 2! 3! 

  • 2]

    7! 

  • 3]

    7! / 3

  • 4]

    7! / 3!

Solution
5
Discuss

If ,​, are probabilities of three mutually exclusive events, then

  • 1]

  • 2]

  • 3]

  • 4]

    None Of These

Solution

Answer :1/2

6
Discuss

If 18C18Cr+2 ; find rC5.

  • 1]

    56

  • 2]

    63

  • 3]

    49

  • 4]

    42

Solution
7
Discuss

In how many different ways can the letters of the word 'OPTICAL' be arranged so that the vowels always come together?

  • 1]

    120

  • 2]

    720

  • 3]

    4320

  • 4]

    2160

Solution
8
Discuss

How many 5 digit even numbers with distinct digits can be formed using the digits 1, 2, 5, 5, 4?

  • 1]

    16

  • 2]

    24

  • 3]

    36

  • 4]

    48

Solution
9
Discuss

Two variants of the CAT paper are to be given to 12 students. In how many ways can the students be placed in two rows of six each so that there should be no identical variants side by side and that the students sitting one behind the other should have the same variant. Find the number of ways this can be done

  • 1]

    2 x 12C6 x (6!)2

  • 2]

    2 x 6! x 6!

  • 3]

    2 x 12C6 x 6!

  • 4]

    None of these

Solution
10
Discuss

A coin is tossed 5 times. What is the probability that head appears an odd number of times?

  • 1]

    1/2

  • 2]

    2/3

  • 3]

    1/3

  • 4]

    1

Solution
# Quiz