Aparamedic stocks an ambulance with four boxes of gauze each box contains 12 gauze pads he uses 28 gauze pads what fraction represents the number of gauze pads left in the ambulance

4*12=48
48-28=28
so 4 boxes with 12 gauze so 48 gauze and 28 used so 28 leftist

Assuming that the probability of boys and girls is equal (in reality slightly more boys than girls are born), the probability is 1/2, simply because the older girl's gender is given and therefore not a part of the probability.

This question comes from the 'boy or girl paradox', a.k.a. the Mrs Smith Problem.