The probability of a month of August having $5$ Wednesdays is ............

  • A
    $\frac{1}{7}$
  • B
    $\frac{2}{7}$
  • C
    $\frac{3}{31}$
  • D
    $\frac{3}{7}$

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Similar Questions

$100$ seeds were selected at random from each of $5$ bags of seeds,and were kept under standardised conditions equally favourable to germination. After some days,the number of seeds which had germinated in each collection were counted and recorded as follows:
Bag $1, 2, 3, 4, 5$
Number of seeds germinated $76, 89, 65, 58, 85$

What is the probability of germination of:
$(1)$ more than $60$ seeds in a bag?
$(2)$ less than $60$ seeds in a bag?
$(3)$ more than $90$ seeds in a bag?

Two dice are thrown simultaneously $500$ times. Each time the sum of two numbers appearing on their tops is noted and recorded as given in the following table:
Sum Frequency
$2$ $14$
$3$ $30$
$4$ $42$
$5$ $55$
$6$ $72$
$7$ $75$
$8$ $70$
$9$ $53$
$10$ $46$
$11$ $28$
$12$ $15$

If the dice are thrown once more,what is the probability of getting a sum less than or equal to $5$?

An insurance company selected $1600$ drivers at random in a particular city to find a relationship between age and accidents. The data is as below:
Age group of drivers Number of accidents in one year $(0, 1, 2, 3, >3)$
$18-25$ $320, 125, 75, 45, 30$
$25-40$ $400, 45, 50, 15, 10$
$40-55$ $150, 85, 13, 8, 10$
Above $55$ $150, 25, 17, 20, 7$

Find the probability of the following event for a driver selected at random from the city: being $25-40$ years of age and having exactly $2$ accidents in a year.

In a medical examination of students of a class,the following blood groups are recorded:
Blood group$A, AB, B, O$
Number of students$10, 13, 12, 5$

$A$ student is selected at random from the class. The probability that he/she has blood group $B$,is:

Find the probability of getting $51$ marks out of $50$ marks.

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