a grandfather brought a certain no. of oranges to give them to his 3 grandsons.their grandmother placed the oranges in a big basket.after sometime the first grandson came and divided the oranges into 3 equal parts and found 1 extra.he hide 1 of these parts and the extra orange in a safe place and left.then the second grandson came and did the same that is divided the oranges into 3 equal parts and found 1 extra.he hide 1 of these parts and the extra orange in a safe place and left.then the third grandson came and did the same -divided the oranges into 3 equal parts and found 1 extra.he hide 1 of these parts and the extra orange in a safe place and left.next morning their grandmother took the remaining oranges and divided them into 3 equal parts and found that each part had Z oranges and as in the previous cases there was an extra orange.she kept that extra orange for herself and gave 1 part(that is Z oranges) each to her 3 grandsons.find the minimum possible value of Z ?pl. provide sol.

1) 1
2) 3
3) 7
4) 16