NIELIT 2021 Dec Scientist B - Section A: 28

Question

$ \dfrac{1}{2}\;  \log_{10}25 – 2 \log_{10}3 + \log_{10}18$ equals $:$

• A. $18$
• B. $1$
• C. $\log_{10}3$
• D. None of these

Answer 1

option B

by using property log a ^b = b* log a

log 5 – log 9 + log 18

log (5 *18 /9)

log 10 =1 (BECAUSE BASE IS 10 )