Question

What is the tens digit of the positive integer r ? 1) The tens digit of r/10 is 3. 2) The hundreds digit of 10r is 6.

Answer 1

Answer:6

Step-by-step explanation:

Let digit be r=abc

if tens digit of $\frac{r}{10}$ is 3.2

i.e. $\frac{r}{10}$ is written as ab.c

so tens digit is a=3

If the hundreds digit of 10r is 6

i.e. 10r is written as abc0

its hundreds digit is b=6

thus tens digit of abc is b=6