Question
8 students appear in an examination. In how many ways
can the result be announced?Solution
Each students can either pass or fail So there exists two possibilities for each students. So total number of ways = 2⁸ = 256
More Permutation and combination Questions
10 6 5 8.5 16 ?
...17 ? 2142 12852 64260 257040
...19, 37, 65, 91, 127, 169
31 16.5 18 �...
73920, 9240, ?, 220, 44, 11
56, 57, 49, 76, 12, ?
The following numbers form a series followed by a (?). Find the odd one out first and then find that what will come in place of the question mark (?) ac...
20 9 10 ? 29 71.5
...123 125 129 132 ? 145
13, 26, 104, ?, 13312, 425984
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