Question -
Answer -
Given:
Total number ofparcels = 4
Total number ofpost-offices = 5
One parcel can beposted in 5 ways that is in either of the one post offices. So, 5C1.Similarly, for other parcels also it can be posted in 5C1 ways.
Hence the number ofways the parcels be sent by registered post is
5C1 × 5C1 × 5C1 × 5C1 = 5× 5 × 5 × 5 = 625 ways.