Question: What is the bowling average of the leading wicket-taker in the 1956–57 Quaid-e-Azam Trophy competition?

Context paragraphs:
Mohammad Abbas (cricketer): Mohammad Abbas (born 10 March 1990) is a Pakistani international cricketer who plays for Khan Research Laboratories domestically.  He took the most wickets in the 2015–16 Quaid-e-Azam Trophy, with a total of 61 dismissals for the tournament.  In the following tournament he was also the leading wicket-taker, with 71 dismissals.

1957–58 Quaid-e-Azam Trophy: The 1957–58 Quaid-e-Azam Trophy was the fourth edition of the Quaid-e-Azam Trophy, the domestic first-class cricket competition in Pakistan.  All matches in the competition, played from 11 October 1957 to 16 March 1958, were accorded first-class status, with the group stage matches played over three days, the semi-finals over four days, and the final over five days.  In the final, Bahawalpur defeated Karachi C by 211 runs, claiming their second title.  Two Bahawalpur players, Iqbal Chaudri and Israr Ali, led the competition in runs and wickets, respectively.

Fazal Mahmood: Fazal Mahmood (Urdu: ‎ ), (18 February 1927 – 30 May 2005) was a Pakistani cricketer.  He played in 34 Test matches and took 139 wickets at a bowling average of 24.70.  The first Pakistani to pass 100 wickets, he reached the landmark in his 22nd match.

Inam-ul-Haq (Lahore cricketer): Inam made his first-class debut in the Quaid-e-Azam Trophy competition of 1969/70, playing for Lahore B, for whom he took one wicket, and scored a duck in the only innings in which he batted.

1956–57 Quaid-e-Azam Trophy: The 1956–57 Quaid-e-Azam Trophy was the third edition of the Quaid-e-Azam Trophy, the domestic first-class cricket competition in Pakistan.  All matches at the tournament, played from 25 December 1956 to 8 March 1957, were accorded first-class status, with the group stage matches played over three days, the semi-finals over five days, and the final over six days.  In the final, the Punjab defeated the Karachi Whites by 43 runs, claiming their first title.  Hanif Mohammad was the leading run-scorer and Fazal Mahmood was the leading wicket-taker.

George Berkeley (cricketer): George Fitz-Hardinge Berkeley (29 January 1870 – 14 November 1955) was an English cricketer who played first-class cricket for Oxford University in the 1890s.  He also played minor counties cricket for Oxfordshire between 1904 and 1906.  A left-arm medium pace bowler, he took 131 wickets in 32 first-class appearances at an average of 20.75.  He best bowling performance occurred on his debut, when he took eight wickets for Oxford University in the first innings against the touring Australians.  Berkeley was awarded his Blue, appearing against Cambridge in the University match, in each of his four years at Oxford.  He was Oxford leading wicket-taker during his first three years at the university, but in the third, he was unable to play in all the matches, but maintained a strong bowling average.

Bowling average: The bowling average is one of a number of statistics used to compare bowlers in the sport of cricket.  It is the ratio of runs conceded per wickets taken, meaning that the lower the bowling average is, the better the bowler is performing.  The bowling average is commonly used alongside the economy rate and the strike rate to judge the overall performance of a bowler.  Where a bowler has taken only a small number of wickets, their average can be artificially low, and an increase in wickets taken can result in large changes in their bowling average.  Due to this, qualification caveats are generally applied to determine career records for bowling averages.  After applying these criteria, George Lohmann holds the record for the lowest average in Test cricket, having claimed 112 wickets at an average of 10.75.

Mohammad Naeem (cricketer, born 1982): Mohammad Naeem (born 10 November 1982) is a former Pakistani cricketer.  From Faisalabad, Punjab, Mohammad made his first-class debut during the 1999–2000 season, playing twice for REDCO Pakistan Limited in the Quaid-e-Azam Trophy.  His List A debut came the following season, when he played five matches for Faisalabad in the 2000–01 One Day Tournament.  A right-arm fast bowler, Mohammad was quite successful in limited-overs matches, and finished the season as Faisalabad's leading wicket-taker, with eleven wickets at an average of 16.00.  He took another five wickets in the 2001–02 season of the tournament, at a similarly low average.  However, that was to be his last limited-overs season for Faisalabad, and aside from a single first-class match against Lahore Blues during the 2002–03 season, in which he went wicketless, he did not play at a major level again.  However, Mohammad did continue to play in regional competitions for Faisalabad well into the late 2000s.

Mohammad Naeem (Lahore cricketer): Chaudri Mohammad Naeem (date of birth unknown), best known as Mohammad Naeem, was a Pakistani cricketer.  From Lahore, Mohammad made his first-class debut during the 1959–60 season, playing two matches for Lahore in the Quaid-e-Azam Trophy.  During the following season, he played a further match for Lahore, in the Ayub Trophy.  This was followed by a single appearance for a Punjab Governor's XI against Punjab University, in which he took three catches and effected three stumpings while playing as the team's wicket-keeper.  For the 1961–62 season of the Quaid-e-Azam Trophy, Lahore was split into two separate teams—Lahore "A" and Lahore "B".  Mohammad played three further first-class matches for Lahore "A" as a top-order batsman.  His highest score (and only half-century) was an innings of 56 runs against Multan in November 1961, which included a partnership of 93 runs with Iftikhar Bukhtari (106) for the second wicket.

Jamil Ahmed: Jamil Ahmed (date of birth unknown) was a East Pakistani cricketer who played five first-class matches for teams based in East Pakistan during the 1960s.  He made his first-class debut during the 1963–64 season of the Quaid-e-Azam Trophy, playing a single match for East Pakistan against Bahawalpur.  On debut, he took 2/39 while bowling in Bahawalpur's second innings, and scored ten not out in East Pakistan's second innings, coming in third behind Mahmood Bokul and Javed Masood.  Jamil's next two matches came for Dacca in December 1964, during the 1964–65 edition of the Ayub Trophy, and he again played as a top-order batsman, as well as an occasional bowler.  In March 1965, he also played a single match for a Dacca University and Education Board team in that season's Quaid-e-Azam Trophy, without much success.  His fifth and final match at first-class level came almost three years later, for Dacca University in the 1967–68 edition of the Ayub Trophy.  In this match, played against the East Pakistan Greens at Dacca Stadium, Jamil recorded both his best bowling figures, 3/34 from 22 overs, and his highest score, 28 runs in Dacca University's second innings, although he had also reached 28 runs while playing for Dacca against Rajshahi in 1964.  Jamil finished his career with 95 runs and eight wickets from his five first-class matches.

Supporting paragraphs: 1956–57 Quaid-e-Azam Trophy Fazal Mahmood
Answer: 24.70