If 'M' means subtraction, 'N' means division, 'O' means addition, and 'P' means multiplication, then which of the following expressions equals 48?
Show answer & explanation
Correct answer: A
Explanation
M = subtraction (−)
N = division (÷)
O = addition (+)
P = multiplication (×)
From option (a), 10 P 5 O 20 N 4 M 7
= 10 × 5 + 20 ÷ 4 − 7
= 50 + 5 − 7
= 48