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Subject :IMO    Class : Class 6
Can you please tell me the answer to this? If NATURAL is coded as UBOUMBS, by the same rules how would you code PROBLEM a. QSPBMFN b.QSPBNFM c.PSQBNFM d PSQBMFN

Ans 1:

Class : Class 9
The answer is (a) QSPBMFN

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