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First field of the three field I.R. indicates opcode, second addresses a register from a set of 100 registers and the third is the memory address field . A 32 bit instruction is placed in 1 MB memory. If there are k instructions which address both register and memory and l instructions which addresses register, then find the number of zero address instructions.

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The number of operands depends on the computer organisation right?? and it is not mentioned anywhere

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