111 if you can cut 10 exactly in half to make 20 half pavers
78.47 Pavers
One!
144 Get 160 to be safe.
72 Get 80 to be safe.
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.
256
It depends on the units used to measure the pavers: inches, centimetres, cubits, etc. It is not possible to answer the question without that information.
31 Get 35 for breakage.
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
16 inch x 16 inch = 16x16/144 = 1.777777.... sq.ft. 450/1.777777..... = 253.125 tiles (not counting any wastage caused by cutting, breakage, etc) = 254 tiles minimum.