Instructions
In the following number series only one number is wrong. Find out the wrong number.
Solution
Successive powers of 2 are subtracted.
188 $$- 2^5$$ = 156 $$\neq 154$$
156 $$- 2^4$$ = 140
140 $$- 2^3$$ = 132
132 $$- 2^2$$ = 128
128 $$- 2^1$$ = 126
126 $$- 2^0$$ = 125
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