If log102 = 0.3010, log10 3 = 0.4771, then the number of zeros between the decimal point and the first
significant figure in (0.0432)10 is? Select the correct option
A) 10
B) 13
C) 14
D) 15
E) 16

Rationale: x = ( 0.0432 ) 10 = ( 432 / 10000 ) 10 = ( 33.24 / 104 ) 10 therefore , log 10 x = 10 ( log 103 + 4 log 102 - 4 ) = 10 ( 1.4313 + 1.2040 - 4 ) = 10 ( - 1.3647 ) = - 13.647 = - 14.353 therefore , x = antilog ( - 14.053 ) thus , number of zeros between the decimal and the first significant figure = 13 answer : b
Answer: B