Quiz Discussion

If P(A)=2/5​, P(B)=3/10​ and P(A ∩ B) =51​, then P(A' | B'). P(B' | A') is equal to

Course Name: Quantitative Aptitude

  • 1]

    5/6

  • 2]

    5/7

  • 3]

    25/42

  • 4]

    1

Solution
No Solution Present Yet

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# Quiz
1
Discuss

What is the sum of all 4 digit numbers that can be formed by the digits 1, 2, 3, 4 each exactly once

  • 1]

    55566

  • 2]

    66660

  • 3]

    56456

  • 4]

    84738

Solution
2
Discuss

The number of triangles that can be formed by choosing the vertices from a set of 12 points, seven of which lie on the same straight line, is

  • 1]

    185

  • 2]

    175

  • 3]

    115

  • 4]

    105

Solution
3
Discuss

Three unbiased coins are tossed. What is the probability of getting at most two heads ?

  • 1]

    3/4

  • 2]

    1/4

  • 3]

    3/8

  • 4]

    7/8

Solution
4
Discuss

How many integers between 1000 and 10000 have no digits other than 4, 5, or 6?

  • 1]

    91

  • 2]

    71

  • 3]

    51

  • 4]

    81

Solution
5
Discuss

There are 8 orators A, B, C, D, E, F, G, and H. In how many ways can the arrangements be made so that A always comes before B and B always comes before C.

  • 1]

    8! / 3!

  • 2]

    8! / 6!

  • 3]

    5! x 3!

  • 4]

    8! / (5! x 3!) 

Solution
6
Discuss

A biased coin in tossed thrice. What is the probability that heads turns out at least twice considering that the probability of a head is 60%?

  • 1]

    0.648

  • 2]

    0.234

  • 3]

    0.348

  • 4]

    .839

Solution
7
Discuss

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

  • 1]

  • 2]

  • 3]

  • 4]

    None Of These

Solution

Answer :1/2

8
Discuss

In how many ways can 10 people line up at a ticket window of a railway station?

  • 1]

    36,28,800

  • 2]

    34,82,800

  • 3]

    33,44,800

  • 4]

    33,28,800

Solution
9
Discuss

A person tosses an unbiased coin. When head turns up, he gets Rs.8 and tail turns up he loses Rs.4. If 3 coins are tossed, what is probability that he gets a profit of Rs.12?

  • 1]

    3/8

  • 2]

    5/8

  • 3]

    3/4

  • 4]

    1/8

Solution

Person will get profit of Rs 12 only when there is 2H (Head) and 1T (Tail)

H + H + T = 12

8 + 8 + (-4) = 12

Total outcome of 2 head and 1 tail = 23 = 8

i.e (T, H, TH, HT, HH, HHT, HTH, THH)

Total event with 2H and 1 T is 3

therfore probability = 3/8

10
Discuss

In a simultaneous throw of two dice, what is the probability of getting a total of 7?

  • 1]

    1/6

  • 2]

    1/4

  • 3]

    2/3

  • 4]

    3/4

Solution
# Quiz