1
WB JEE 2009
MCQ (Single Correct Answer)
+1
-0.25

The value of $$\left( {{1 \over {{{\log }_3}12}} + {1 \over {{{\log }_4}12}}} \right)$$ is

A
0
B
1/2
C
1
D
2
2
WB JEE 2009
MCQ (Single Correct Answer)
+1
-0.25

If x = logabc, y = logbca, z = logcab, then the value of $${1 \over {1 + x}} + {1 \over {1 + y}} + {1 \over {1 + z}}$$ will be

A
x + y + z
B
1
C
ab + bc + ca
D
abc
3
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

The value of $${{{{\log }_3}5 \times {{\log }_{25}}27 \times {{\log }_{49}}7} \over {{{\log }_{81}}3}}$$ is

A
1
B
6
C
$${2 \over 3}$$
D
3
4
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

The sum of the series $${1 \over {1.2}} - {1 \over {2.3}} + {1 \over {3.4}} - \,\,.....\,\,\infty $$ is

A
$$2{\log _e}2 + 1$$
B
$$2{\log _e}2$$
C
$$2{\log _e}2 - 1$$
D
$${\log _e}2 - 1$$
WB JEE Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12