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Q.

The value of 5872×0.058  is ________.


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a

333.84

b

383.4

c

338.84

d

343.44 

answer is C.

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Detailed Solution

Let x= 5872×0.058
Taking log on both sides, we get
log x = log (5872×0.058)
log x = log (5872) + log (0.058)
log x = log (58.72 ×10-) + log (58 ×10-3)
log x = log (58.72) + log(102) + log (58) + log (10-3)
log x = log (58.72) + 2 log(10) + log(58) – 3 log (10)
log x = 1.77 + 2 + 1.76 – 3
log x = 2.53
Taking antilog on both sides, we get
x = antilog (2.53)
x = 338.84
Thus, (3) is the correct option.
 
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The value of 5872×0.058  is ________.