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Questions by Daniel from Washington, DC

A particle moves in a straight line so that its distance, s m, from a fixed point A on the line is given by s=2t2−4t+9, for t less than or equal to 3, where t is the time in seconds after passing...

A particle moves in a straight line so that its distance, s m, from a fixed point A on the line is given by s=2t24t+9, for t less than or equal to 3, where t is the time in seconds after passing...

Find the total number of different permutations of all the letters of the word RESERVE Find the number  of these permutations in which   (i) E is the first letter   (ii)...

A row of 10 houses is to be painted in 3 colors. 2 houses are to be red, 3 to be blue and 5 to be white. Find the number of different ways in whih the row of the houses can be painted   (I)...