Question

Meena has 30 pencils and 20 pens in a box. Find the probability of selecting (a) a pen (b) a pencil at random​

Answer 1

Answer:

a) probability of getting a pen is 2/5

b) probability of getting a pencil is 3/5

Step-by-step explanation:

a) Let the probability of getting a pen be P(A)

n(A) be no . of pens

n(A) = 20

n(S) = 30+20 = 50

P(A) = 20/50 = 2/5

b)Let the probability of getting a pen be P(B)

n(B) be no . of pencils

n(B) = 20

n(S) = 30+20 = 50

P(B) = 30/50 = 3/5

Answer 2

Answer:

(a)0.4

(b)0.6

Step-by-step explanation:

Questions: Meena has 30 pencils and 20 pens in a box. Find the probability of selecting (a) a pen (b) a pencil at random​.

To Find: The Probability of  of selecting (a) a pen (b) a pencil at random.

Given: Meena has 30 pencils and 20 pens in a box.

Concept: Probability

Explanation:-

The number of pencils with Meena : 30

The number of pens with Meena : 20

Total Number of items with Meena: 20+30=50

Now The probability of selecting an item:

The number of that particular item/ total number of items.

The Probability of Selecting a Pencil:

Number of pencils/Total number of items

= 30/50

=3/5=0.6

The Probability of Selecting a Pen:

= 20/50

=2/5=0.4

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