144 + 8 = ? - 9 (1) 3 (3) 4 (5) None of these (2) 2 (4) 6
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None of these
Step-by-step explanation:
144+8 = ?+9
144+8 = x+9 ( let's take the unknown value as x )
144+8-9 = x
x = 144-1
X = 143
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