Table of Probability Values for Birthday Problem

People Unique
Days
Probability
none the same
Probability at least
two the same
1 365 1 0
2 364 0.997 0.003
3 363 0.992 0.008
4 362 0.984 0.016
5 361 0.973 0.027
6 360 0.960 0.040
7 359 0.944 0.056
8 358 0.926 0.074
9 357 0.905 0.095
10 356 0.883 0.117
11 355 0.859 0.141
12 354 0.833 0.167
13 353 0.806 0.194
14 352 0.777 0.223
15 351 0.747 0.253
16 350 0.716 0.283
17 349 0.685 0.315
18 348 0.653 0.347
19 347 0.621 0.379
20 346 0.589 0.411
21 345 0.556 0.444
22 344 0.524 0.476
23 343 0.493 0.507
24 342 0.462 0.538
25 341 0.431 0.569
26 340 0.402 0.598
27 339 0.373 0.627
28 338 0.346 0.654
29 337 0.319 0.681
30 336 0.294 0.706
31 335 0.270 0.730
32 334 0.247 0.753
33 333 0.225 0.775
34 332 0.205 0.795
35 331 0.186 0.814

40 326 0.109 0.891

50 316 0.030 0.970

60 306 0.006 0.994