Question

If each interior angle of a regular polygon is 10 times it's exterior angle then find the number of sides of the polygon

The number of students in three classrooms is 138. The ratio of number of students
in 1st room and 2nd room is 3 : 4 and that of 2nd room and 3rd room is 7:5. Find the number of students in the first room.


5. Let k=1 11 111 ...... upto 50 terms. Find thousandth place digit in k.


7. How many times we should subtract GCD of 119 ans 153 from LCM of 119 and 153
so that we get number equal to sum of 119 and 153



please let me know the any of the answer​

Answer 1

number of students

in 1st room and 2nd room is 3 : 4 and that of 2nd room and 3rd room is 7:5. Find the number of students in the first room.

5. Let k=1 11 111 ...... upto 50 terms. Find thousandth place digit in k.