If in a two digit number, the digit at unit place is y and the digit at tens place is 5, then the number is
1). 50y + y
2). 5y + 5
3). 50 + y
4). 50y + 5
What smallest number should be added to 2957 so that the sum is completely divisible by 17 ?
1). 9
2). 2
3). 3
4). 1
If in a two digit number, the digit at unit place is z and the digit at tens place is 8, then the number is
1). 80z + z
2). 80 + z
3). 8z + 8
4). 80z + 8
The sum of a non-zero number and thrice its reciprocal is $\frac{52}{7}$. Find the number.
1). 8
2). 9
3). 7
4). 6
The reciprocal of the sum of the reciprocals of $\frac{2}{9}$ and $\frac{7}{10}$ is
1). $\frac{14}{83}$
2). $\frac{83}{14}$
3). $\frac{90}{83}$
4). $\frac{83}{90}$