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Byju's Answer
Standard X
Chemistry
Observations That Help Us to Determine a Chemical Reaction
When a dice i...
Question
When a dice is rolled , what is the probability of getting :
a ) an even number
b ) an even prime number
c ) multiple of 5
( With all steps and formulas )
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Solution
When
a
dice
is
rolled
,
then
possible
outcomes
are
:
1
,
2
,
3
,
4
,
5
,
6
Total
number
of
possible
outcomes
=
6
a
.
The
even
numbers
are
:
2
,
4
and
6
Number
of
favourable
outcomes
=
3
So
,
P
getting
an
even
number
=
Number
of
favourable
outcomes
Total
number
of
possible
outcomes
=
3
6
=
1
2
b
.
Th
even
prime
number
is
2
.
Number
of
favourable
outcomes
=
1
So
,
P
getting
an
even
prime
number
=
Number
of
favourable
outcomes
Total
number
of
possible
outcomes
=
1
6
c
.
The
multiples
of
5
are
:
5
Number
of
favourable
outcomes
=
1
So
,
P
getting
multiples
of
5
=
Number
of
favourable
outcomes
Total
number
of
possible
outcomes
=
1
6
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