CREATE TABLE table_24865763_2 (lmp1_winning_team VARCHAR, rnd VARCHAR, lmp2_winning_team VARCHAR)
How many won the LMP1 on round 4 if No. 42 Strakka Racing was the LMP2 Winning Team?
SELECT COUNT(lmp1_winning_team) FROM table_24865763_2 WHERE rnd = 4 AND lmp2_winning_team = "No. 42 Strakka Racing"