Three magnets of same length but moments `M,2M` and `3M` are arranged in the form of an equilateral triangle with oppositive poles nearer, the resultnat magnetic moment of the arrangement is

The resultant magnetic moment for the following arrangement is

The resultant magnetic moment for the following arrangement is

The resultant magnetic moment for the following arrangement is

The resultant magnetic moment for the following arrangement is

The resultant magnetic moment for the following arrangement is

The resulting magnetic moment for the following arrangement is

The resultant magnetic moment for the following arrangement

Three identical bar magnets each of magnetic moment M are arranged in the form of an equilanteral triangle such that at two vetices like poles are in contact. The resultant magnetic moment will be

Four magnets of magnetic momnets M,2M,3M and 4M are arranged in the fome of a square such that unlike poles are in contact. Then the resultant magnetic moment will be