78.47 Pavers
One!
144 Get 160 to be safe.
72 Get 80 to be safe.
36 of them. Get 40 to be safe.
78.47 Pavers
One!
111 if you can cut 10 exactly in half to make 20 half pavers
144 Get 160 to be safe.
72 Get 80 to be safe.
256
31 Get 35 for breakage.
You would need 81 16x16 pavers to cover a 36 square foot area. Each 16x16 paver covers an area of 1.78 square feet, so dividing 36 by 1.78 gives you 20.22 pavers. Since you can't have a fraction of a paver, you would round up to the nearest whole number, which is 81.
36 of them. Get 40 to be safe.
The patio is 10x 12 = 120 sq ft or 17,280 sq in The pavers are 16x16 = 256 sq in So you need 17280/256 = 68 pavers
216
The answer depends on the measurement units used for 16x16. The answer also depends on the shape of the 390 sq ft area to be covered because the more irregular the shape, the greater the number of pavers you will need to cut. That is likely to result in some breakage. Furthermore, you may not want to use all the offcuts since that will make part of the area into a mosaic.