IKMC 2027 - Grades 3-4 - Self-study SET 19 - Thematic Batch 3 Question 1

Betty replaces the stars in 1 ∗ 2 ∗ 3 ∗ 4 ∗ 5 with exactly two plus signs and two minus signs. She also inserts one pair of parentheses. What is the largest value she can obtain?