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Select the incorrect option:

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Select the incorrect option:

(a) (101)10 = (1100101)2

(b) G is valid in hexadecimal system.

(c) C represents 12

(d) The base of a decimal number system is 10.

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The correct choice is (b) G is valid in hexadecimal system.

Explanation: G is not a valid hexadecimal number. In this system, only representations from A to E are used to represent the numbers from 10 to 15. The base of the hexadecimal number system is 16.
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