A rational number which is 50 times its own logarithm to the base 10 is :

There exists a natural number N which is 50 times its own logarithm to the base 10, then N is divisible by

There exists a natural number N which is 50 times its own logarithm to the base 10, then N is divisible by 5 (b) 7 (c) 9 (d) 11

Number of integers whose characteristic of logarithms to the base 10 is 3, is

If P is the number of natural numbers whose logarithms to the base 10 have the characteristic pa n dQ is the number of natural numbers logarithms of whose reciprocals to the base 10 have the characteristic -q , then find the value of log_(10)P-(log)_(10)Qdot

The product of two rational number is 15. If one of the numbers is 10 , find the other.

The product of two rational number is 15. If one of the numbers is 10 , find the other.

Let x=(0. 15)^(20)dot Find the characteristic and mantissa of the logarithm of x to the base 10. Assume log_(10)2=0. 301 and log_(10)3=0. 477.

Find a rational number, which when expressed as a decimal will have 0.6 as its expansion.

If tanalpha=sqrt(a) , where a is a rational number whch is not a perfect square, then which of the following is a rational number?

Which integer is its own additive identity?