তিনটি সংখ্যার যোগফল ৫৪৫২ । সংখ্যা তিনটি হল  ২৫৬৩ , _____ এবং ১২৪৫।
To solve this problem, let's analyze it step-by-step:

Step-1: There are 3 numbers and the sum of the numbers is = 5452

Step-2: Two of the numbers are 2563 and 1245

Step-3: So the third number is = sum of three number - sum of two numbers= 5452-(2563+1245) = 1644

#Answer: 1644