Artificial magnets can be made in different .................. (shapes/colours).

Artificial magnets can be shaped like a

Magnets cannot be made using

Artificial magnets can be found in ................. (only one/different) shape(s) and size(s)

Force can change an object's ..................(colour/shape).

Artificial smoke screens are made by:

Natural and artificial magnets

In how many ways a garland can be made by using 15 different flowers.

In how many ways a garland can be made by using 15 different flowers.

The number of signals that can be made by 4 flags of different colours, taking one or more at a time is (i) 48 (ii) 52 (iii) 64 (iv) 56

How many different signals can be made by hoisting 6 differently coloured flags one above the other when any number of them may be hoisted at once?