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Answer 2 4 6

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In direct and indirect addressing modes, there is no arithmetc addition operation. The addresses are obtained by dereferencing pointers to memory locations. In case of relative/base indexed addressing mode, the offset specified in the instruction is added to the base register.

Also, similarly in case of indexed addressing mode, the offset is added to the index register specified in the instruction set.

So, 2, 4, 6 are correct.
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