Question
Find the number of words that can be formed by using all
letters of the word 'LAPTOP', if order of vowels remains same.Solution
Total words “LAPTOP”= 6 Number of vowels (A, O) = 2 But in these, we cannot change the order of vowels. Suppose the required ways be 'n' multiplied by 2! ways with 'n' must be given 6! => 2! × n = 6! => n = 360 ways
10Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â Â Â Â Â Â 5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 8.5Â Â Â Â Â Â Â Â Â Â 16Â Â Â Â Â Â Â Â Â Â Â Â Â ?
...17Â Â Â Â Â ? Â Â Â Â Â 2142 Â Â Â Â Â Â 12852 Â Â Â Â Â Â 64260Â Â Â Â Â Â 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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