Problem Solving (PS) | Re: While shifting his departmental store, Mr. Trump found the

You can think of this logically rather than mathematically:
if you have 7^10 articles and they need to be divided equally in 8 rooms.... you can think as 7^8 articles were equally divided in 8 rooms. The remaining 7^2 i.e. 49 still remain... with a remainder of 1, 48 (6*8= 48) articles can still be divided equally among the 8 rooms . Hence B

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