Given (i) 4 flags (ii) 5 flags of different colours, how many different Signals can be generated if each signal requires the use of two flags, one below the other ?

Given 5 flags of different colours, how many different signals can be generated if each signal requires the use of 2 flags, one below the other?

How many different signals can be generated from 6 flags of different colours if each signal makes use of all the flags at a time, placed one below the other?

How many different signals can be transmitted by arranging 3 red, 2 yellow and 2 green flags on a pole ?

How many different signal can be giving using any number of flag from flag 4 of the different colour

How many signals can be made by hoisting 5 flags of different colours ?

Find the number of different signals that can be generated by arranging at least 2 flags in order (one below the other) on a vertical staff, if five flags are available.

In how many ways can 5 flags, in which 3 are red, one is white and one is blue, be arranged on a staff, one below the other, if flags of one colour are not distinguishable ?

There are three books of physics, four of chemistry and five of mathematics. How many different collections can be made such that each collection consists of (i) one book of each subject (ii) atleast one book of each subject. (iii) atleast one book of mathematics.

To conduct Sports Day activities, in your rectangular shaped school ground ABCD, lines have been drawn with chalk powder at a distance of 1m each. 100 Flower pots have been placed at a distance of 1m from each other along AD, as shown in Fig. 7. 12. Niharika runs 1/4 th the distance AD on the 2nd line and posts a green flag. Preet runs 1/5th the distance AD on the eighth line and posts a red flag. What is the distance between both the flags? If Rashmi has to post a blue flag exactly halfway between the line segment joining the two flags, where should she post her flag?