If the signs `'xx' and '-'` are interchanged in each of the following options, then which of the following options will be incorrect?

Options

A. `26 xx 5 - 4 = 6`
B. `18 - 6 xx7 = 100`
C. `24 xx 6 - 3 = 6`
D. `9-6 xx 2 = 52`

Answer

B

Explanation

After interchanging the sgns in each option, we get
A. `26 - 5 xx 4 = 26 - 20 = 6` (Correct)
B. `18 xx 6 - 7 = 108 - 7 = 101` (Incorrect )
C. `24 - 6 xx 3 = 24 - 18 = 6` (Correct)
D. `9 xx 6 - 2 = 54 - 2 = 52` (Correct)