**·**2013-10-17 00:15:39

Total no. of ways without any restrictions is 6!=720.

For every child-guardian pair, there are two possibilities: either the child comes first or the guardian comes first. Now, discarding the cases where the child comes first for the three pairs, the total no. of ways is 7202.2.2=90.

- Manish Shankar good work :)

·0·Reply·2013-10-17 22:08:52