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Q.

How do you convert 38 into a decimal?

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a

7.35

b

0.375

c

3.75

d

0.75 

answer is B.

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Detailed Solution

We can convert the fraction by multiplying the numerator and denominator by 5×5×5.
Given, 38=3×5×5×58×5×5×5=3751000
                                 Or 0.375
∴ It is only possible when prime factors of denominator are 2's and 5's just multiplying as many 5's and 2's.
   
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