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Question
Which of the following is not a net of a regular die?
Which of the following is not a net of a regular die?
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Solution
The correct option is B
In a regular die the sum of dots on the opposite faces should always be 7. In option b, two sets of opposite faces do not follow this rule.
It can be checked from the image below where the opposite faces are coloured with the same colour.
Sum of opposite faces of the shown die:
4 + 1 = 5
3 + 6 = 9
5 + 2 = 7
So this die is not a regular die.
In a regular die the sum of dots on the opposite faces should always be 7. In option b, two sets of opposite faces do not follow this rule.
It can be checked from the image below where the opposite faces are coloured with the same colour.
Sum of opposite faces of the shown die:
4 + 1 = 5
3 + 6 = 9
5 + 2 = 7
So this die is not a regular die.
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