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A Square and A Cube — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSA Square and A Cube1 Mark
Question
Which are these five lockers?
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Answer

The lockers that are toggled twice are the prime numbers, since each prime number has 1 and the number itself as factors. So, the code is 2-3-5-7-11.

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