If log 64 = 1.8061, then the value of log 16 will be (approx)?

Correct Answer: 1

Correct Answer: 4

Explanation:

log 2 3 144 = 4 

Correct Answer: (1+2m)/2

Explanation:

log 49 28 = 1 2 log 7 7 × 4

 

= 1 2 + 1 2 2 log 7 2
= 1 2 + log 7 2
=  1 2 + m
=  1 + 2 m 2.

Correct Answer: 256/81

Correct Answer: x/(x-1)

Correct Answer: 150 m

Explanation:

T i m e = S u m o f l e n g t h o f t h e t w o t r a i n s D i f f e r e n c e i n s p e e d s

20 = ( 100 + x ) 25 2 

? X=150m

Correct Answer: 32

Correct Answer: a + b = 1

Explanation:

 

i f log a b + log b a = log a + b , t h e n

log a + b = log a b × b a = log 1

 

so, a+b=1

Correct Answer: p > q

Explanation:

k l > k + 1 l + 1 for (k,l) > 0 and  k > l 

 

 

 

Let     k = x+1    and   l = x

 

 

 

Therefore,  x + 1 x > ( x + 1 ) + 1 ( x ) + 1

 

 

 

 (x + 1) > x

 

 

 

Therefore,  log ( x + 1 ) log ( x ) > log ( x + 2 ) log ( x + 1 )

 

 

 

? log x x + 1 > log x + 1 x + 2

Correct Answer: -5

Explanation:

log (0.0000134). Since there are four zeros between the decimal point and
the first significant digit, the characteristic is ?5.