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Question
The exponent of 2 in the prime factorisation of 144, is
Options
4
5
6
3
Solution
Using the factor tree for prime factorization, we have:
Therefore,
`144 =2xx2xx2xx2xx3xx3`
`144=2^4xx3^2`
Thus, the exponent of 2 in 144 is 4.
Hence the correct choice is (a).
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