2026 YTSS P1 Q6

2026 YTSS P1 Q6

Secondary 4
2 marks
  1. Given that \(A=2^{n+2}\times3^4\times5\) and \(B=2^5\times3^{n-1}\times7^2\), where \(n\) is a positive integer.
    The greatest common factor of A and B is 48.
    Find the value of \(n\).[1]
  2. Explain why 1 is not a prime number.[1]

Solution:

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Answer:(a) \(n=2\). (b) 1 has only one positive factor.

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