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Syllabus
they decided to take a group photograph by sitting in a single row. If there are 5 boys and 5
girls including Anmol.
Based on the above information answer the following questions.
(i) Find the number of ways in which they can be seated in a row, so that no two girls may
sit together.
(ii) Find the number of ways in which they can be seated in a row so that all the girls sit
together and all boys sit together.
(iii) Find the number of ways in which they can be seated in a row so that all the girls are
never together.
Jerusalem, also known as musical chairs. They set chairs in a straight line, one lesser than the
number of children in the game, and then played the music as they walk around the chairs. In
each and every round one chair gets removed.
If all 6 of them participated in the game, then answer the following questions.
(a) If in first round Kiran didn?t get any chair to sit then, find the number of ways of sitting
arrangements of the remaining 5 children.
(b) If in second round, Rohit didn?t get any chair to sit then, find the total number of sitting
arrangements of remaining 4 children such that Sam and Ram sit together.
(c) If in third round, Raj didn?t get any chair to sit then, find the total number of sitting
arrangements of remaining 3 children such that Meena sits in the middle.
solution to it. The resulting mixture is to be more than 4% but less than 6% hydrochloric
acid. If we have 1280 L of the 16% solution, then how many liters of the 1% solution will
have to be added?
Jerusalem, also known as musical chairs. They set chairs in a straight line, one lesser than the
number of children in the game, and then played the music as they walk around the chairs. In
each and every round one chair gets removed.
If in third round, Raj didn?t get any chair to sit then, find the total number of sitting
arrangements of remaining 3 children such that Meena sits in the middle.