Answer:
a. Journalize the transactions of January 31, June 14, and November 23.
Explanation:
                     deb cre
jan-31 Treasury Stock 2550000 Â
(50000*51) Â
Cash                      2550000
 Â
jun-14 Cash           1440000 Â
(24000*60) Â
Treasury Stock               1224000
(24000*51) Â
Paid in capital for treasury stock    216000
 Â
nov-23 Cash            1008000 Â
(18000*56) Â
Treasury stock                918000
(18000*51) Â
Paid in capital for treasury stock     90000