# Permutation & Combination

Are you preparing for campus placements,Banking,SSC, IAS, Insurance,Defence and other competitive exams? Then, make sure to take some time in practicing the Permutation & Combination questions and answer in Quantitative Aptitude. Moreover, only those questions are included that are relevant and likely to be asked in any competitive exam. So, take these questions and answer, brush up your skills and practice to stay fully prepared for any your exam.

• Q29.If the letters of the word AAPTN are arranged in all possible ways as in a dictionary, then rank of the word PATNA from last is:

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• Q30.The number of words can be formed with the letters of the word PUTALAPITRA without changing the relative positions of vowels and consonants is:

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• Q31.The sum of all values of r in $\left(\begin{array}{c}18\\ r-2\end{array}\right)+2\left(\begin{array}{c}18\\ r-1\end{array}\right)+\left(\begin{array}{c}18\\ r\end{array}\right)\ge \left(\begin{array}{c}20\\ 13\end{array}\right)$ must be

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• Q32.Find the number of rectangle which can be formed with sides of odd length, if it is given that a rectangle with sides 2m – 1 and 2n – 1 is divided into squares of unit length.

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• Q33.The letters of the word CEBADA are written in all possible orders and these words are written out as in a dictionary. Then the rank of the word CEBADA is

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• Q34.If p denotes the number of permutations of n + 2 things taken all at a time, q the number of permutations of n things taken 11 at a time and r the number of permutations of n – 11 things taken all at a time such that p = 182 qr, then the value of n is

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• Q35. If there are 10 positive real number , then how many triplets of these numbers can be generated such that in each triplet the first number is always less than the second number, and the second number is always less than the third number?

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