Quiz Discussion

A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?

Course Name: Quantitative Aptitude

  • 1]

    32

  • 2]

    48

  • 3]

    64

  • 4]

    96

Solution
No Solution Present Yet

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# Quiz
1
Discuss

In how many ways a committee, consisting of 5 men and 6 women can be formed from 8 men and 10 women?

  • 1]

    266

  • 2]

    5040

  • 3]

    11760

  • 4]

    86400

Solution
2
Discuss

How many parallelograms will be formed if 7 parallel horizontal lines intersect 6 parallel vertical lines?

  • 1]

    42

  • 2]

    294

  • 3]

    315

  • 4]

    258

Solution
3
Discuss

In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?

  • 1]

    63

  • 2]

    90

  • 3]

    126

  • 4]

    45

Solution
4
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
5
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
6
Discuss

In how many ways can a cricketer can score 200 runs with fours and sixes only?

  • 1]

    13

  • 2]

    19

  • 3]

    16

  • 4]

    17

Solution
7
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

8
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
9
Discuss

A speaks truth in 75% cases and B in 80% of the cases. In what percentage of the cases are they likely to contradict each other, narrating the same incident?

  • 1]

    5%

  • 2]

    15%

  • 3]

    35%

  • 4]

    45%

Solution
10
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
# Quiz