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Question

How many prime factors are there in the expression (12)43×(34)48×(2)57?

A
282
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B
237
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C
142
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D
61
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Solution

The correct option is C 282
(12)43×(34)48×(2)57
(2×2×3)43×(2×17)48×(2)57
(2)43×(2)43×(3)43×(2)48×(17)48×(2)57
Hence prime factor =43+43+43+48+48+57=282

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