When the integer n is divided by 7, the remainder is 3. What is the remainder if 5n divided by 7?

∠A, ∠B, ∠C are three angles of a triangle. If ∠A -∠B =18°, ∠B – ∠C = 45°, then, ∠B, ∠A and ∠C are

If a line has one end (4,0) and the middle point (4,1), what will be the directions at the other end of the line?

Six years ago, the ratio of ages of A to B was 7 : 5. After 4 years from now, the ratio of their ages will be 11 : 9. What is A’s age at present?

Two numbers are in the ratio 3 : 4. Their L.C.M. is 84. The greater number is 

The ratio between the ages of a father and his son four year ago was 19:6. If the difference between the ages of the father and son is 26 years, what will be the ratio of their present ages?

Let x be the least number of 4 digit that when divided by 2, 3, 4, 5, 6 and 7 leaves a remainder of 1 in each case. If x lies between 2000 and 2500, then what is the sum of the digits of x?

If the clock is at 3:17, what time will be seen in the mirror?