Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Probability

Short Answer Type

1051. A coin is tossed 5 times. What is the probability of getting
(i) at least 3 heads (ii) at most 2 heads

77 Views

Long Answer Type

1052. A pair of dice is thrown 6 times. If getting a total of 8 is considered a success, what is the probability of
(i) at least 4 successes?
(ii) at most 5 succcesses?

85 Views

Short Answer Type

1053. An unbiased coin is tossed six times. Find the probability of obtaining exactly 4 heads.

86 Views

1054. An unbiased coin is tossed six times. Find the probability of obtaining less than 3 heads .

98 Views

1055. An unbiased coin is tossed six times. Find the probability of obtaining more than 4 heads.

88 Views

1056. An unbiased coin is tossed six times. Find the probability of obtaining more than 4 heads and less than 6 heads.

81 Views

1057. An unbiased coin is tossed six times. Find the probability of obtaining more than 6 heads.

87 Views

1058. An unbiased coin is tossed six times. Find the probability of obtaining at least 4 heads

90 Views

1059. An unbiased coin is tossed six times. Find the probability of obtaining at most 4 heads.

98 Views

1060. An unbiased coin is tossed six times. Find the probability of obtaining 2 heads.

Here n = 6
p = Probability of head = $1 half comma space space straight q space equals space 1 space minus space straight p space equals space 1 minus 1 half space equals 1 half$

P(2 heads) = P(2) = $straight C presuperscript 6 subscript 2 space open parentheses 1 half close parentheses to the power of 4 space open parentheses 1 half close parentheses to the power of 4 space equals space fraction numerator 6 space cross times space 5 over denominator 1 space cross times space 2 end fraction cross times space 1 over 64 space equals space 15 over 64$

90 Views