Aptitude · all questions

Logarithm
practice.

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Questions

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Q41

a = lo g_{8} 225

and

b = lo g_{2} 15,

then a in terms of b is -

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Q42

lo g 2 = 0.3010

and

lo g 3 = 0.4771,

the value of

lo g_{5} 512

= ?

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Q43

If the logarithm of a number is - 3.153, what are characteristic and mantissa?

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Q44

lo g 2 = 0.30103,

the number of digits in

4^{50}

is -

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Q45

The number of digits in

4^{9} \times 5^{17},

when expressed in usual form, is -

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Q46

lo g 3 lo g (3^{x} - 2)

and

lo g (3^{x} + 4)

are in arithmetic progression, then x is equal to

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Q47

lo g_{10} a = p,

lo g_{10} b = q,

then what is

lo g_{10} (a^{p} b^{q})

equal to?

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Logarithmpractice.