Question
In how many different ways can 6 teachers and 5 students
be seated in a row so that they sit alternately?Solution
T S T S T S T S T S T Now 6 teachers can be seated in 6 places in 6! Ways. 5 students can be seated in 5! ways. ∴ Required no. of ways = 6! × 5! = 720 × 120 = 86400
In a certain code language, ‘MEANT’ is coded as '360' and 'CUMIN' is coded as '42'. What will be the code for ‘DEMAND’ in the same language?
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In a certain code language, 'FAINT' is coded as '2014916', and 'GRME' is coded as '513187'. How will 'POIL' be coded in that language?
What is the code for ‘Let’?
What is the code of “To Climate”?
In a certain code language, ‘SAPLING’ is coded as '14' and ‘CHEMIST’ is coded as '152'. What is the code of word ‘MANLY’ in the same coding ...
Which of the following code is incorrectly matched?
How many such pairs of letters are there in the word ‘PREVIOUS’, each of which has as many letters between them in the word as they have bet...
In a certain code language, ‘HABILITATION’ is written as 'IBAHATILNOIT', and 'OBJECTIFYING' is written as ‘ITASCAFSYROT’. How will 'PACIFICATION...
Which of the following is coded as ‘mn’?
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