logical operation on matrix

(Return logical 0 or 1) if matrix A contains ten values between 500 and 600.

 A=[1 2 3;4 5 6; 4 5 2]

A = 3×3

1 2 3 4 5 6 4 5 2

  A(A>[1:2:6])=true %SMALL NUMBERS FOR EXAMPLE

A = 3×3

1 2 3 1 1 1 1 1 2

Answer 1

[DGM]

I'm going to assume that the text question is what you're after:

A = randi([100 999],10,10) % a bunch of integers

A = 10×10

756 350 720 933 311 504 214 315 736 279 334 959 539 277 582 701 528 418 941 523 768 367 470 157 524 543 177 131 833 416 995 572 341 728 828 280 875 161 250 482 201 593 316 296 813 148 341 356 435 870 392 162 693 700 398 301 509 438 390 533 284 593 774 286 710 781 976 337 833 527 616 751 880 961 804 339 626 177 588 956 946 771 904 346 665 560 106 544 366 708 320 446 804 673 429 882 836 850 224 371

mk = A>=500 & A<=600  %find locations in the specified range

mk = 10×10 logical array
   0   0   0   0   0   1   0   0   0   0
   0   0   1   0   1   0   1   0   0   1
   0   0   0   0   1   1   0   0   0   0
   0   1   0   0   0   0   0   0   0   0
   0   1   0   0   0   0   0   0   0   0
   0   0   0   0   0   0   1   0   0   1
   0   1   0   0   0   0   0   0   0   1
   0   0   0   0   0   0   0   0   1   0
   0   0   0   0   0   1   0   1   0   0
   0   0   0   0   0   0   0   0   0   0

has10inrange = nnz(mk)>=10 % are there at least 10 values in the range?

has10inrange = logical
   1

[Image Analyst]

Or if you want to know if "A contains ten values between 500 and 600"

has10inRange = nnz(mk) == 10 % has10inRange is true if there are exactly 10 values in the range.