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A computer has 40 bit instruction code . It uses one register operand and one memory operand .There are 128 general purpose regsiters and 256 M bytes of RAM

If there are n    2 address operations which uses both register and memory then how many one address operations are possible

a) (16-n)x 2^7  b)(32-n)x 2^6     c)64x 2^18  d)none

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Best answer
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D is answer.

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The solution is not complete ... Anyone send proper solution of this question

Answer is (b) For my solved method

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