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Code Formation

Class 11 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsA four-letter code is formed from (P,Q,R,S,T). Repetition is not allowed and (P) and (Q) must not be adjacent. How many codes are possible?Class 11Permutations and CombinationsFundamental principle of countingHardMathematicsA 5-letter code uses only A, B, C, and D. The first and last letters must be the same, and repetition is allowed. How many codes are possible?Class 11Permutations and CombinationsFundamental principle of countingMediumMathematicsA 4-place code has 3 letter choices for each of its first two places and 4 digit choices for each of its last two places. Repetition is allowed. How many codes are possible?Class 11Permutations and CombinationsFundamental principle of countingMediumMathematicsIn a (4)-place code the first place has (3) letter choices, the second has (4) digit choices, the third has (2) symbol choices and the fourth has (5) color choices. How many codes are possible?Class 11Permutations and CombinationsFundamental principle of countingEasyMathematicsIn a (3)-letter code each place has (6) letter choices and repetition is allowed. How many codes can be formed?Class 11Permutations and CombinationsFundamental principle of countingEasyMathematicsIn a code the first letter can be chosen in (4) ways and the second digit in (6) ways. How many codes can be formed?Class 11Permutations and CombinationsFundamental principle of countingEasy

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