twenty seven small cubes are glued together to make a big cube. the exterior of the big cube iw painted with orange colour . How many among each of 27 small cubes would have been painted orange on ?
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Answer is 26
Consider 3x3x3 cube the centre alone is unpainted so
27-1=26
Consider 3x3x3 cube the centre alone is unpainted so
27-1=26
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