## The prime factorisation of 3825 is

##
(a) 3 × 5
^{
2
}
× 21 (b) 3
^{
2
}
× 5
^{
2
}
× 35

##
(c) 3
^{
2
}
× 5
^{
2
}
× 17 (d) 3
^{
2
}
× 25 × 17

This question is

inspired fromEx 1.2, 1 (iii) - Chapter 1 Class 10 -Real Numbers

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