Question

how many groups of 2 person can be formed from these four persons p1, p2, p3 and p4​

Answer 1

Answer:

either P1,q2 or P2,p3 or p3,p4 or p4,P1 or P1,p3 or P2,p4. that's it

Step-by-step explanation:

allways remeber that 1number can form up with the rest all numbers so first count how many numbers are there and the subtract it by one and the multiply both the results and match the answer at last.