SSC CHSL 2023 · PYQ · Mathematical Operations · medium
After interchanging the given two numbers (not digits) 6 and 4, what will be the values of expression (I) and (II) respectively?
I. 10 × 6 – 30 ÷ 4 + 20
II. 8 – 4 × 5 + 6 ÷ 2
A.20 and 55
B.12 and –6
C.55 and –20✓ Correct
D.10 and –6
Explanation
After swapping 6 and 4: Expression I becomes 10×4 – 30÷6 + 20 = 40 – 5 + 20 = 55. Expression II becomes 8 – 6×5 + 4÷2 = 8 – 30 + 2 = –20. So the answer is 55 and –20.
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