CSAT 2024

Q. In the expression 5 * 4 * 3 * 2 * 1, * is chosen from +, -, * each at most two times. Which is the smallest non-negative value of the expression?

a) 3
b) 2
c) 1
d) 0
Correct answer: d) 0

Question from UPSC Prelims 2024 CSAT

Explanation : 

Smallest non-negative value of the expression

5 – 4 – 3 + 2 × 1 = 0

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