Quantitative Aptitude - Arithmetic Ability Questions

What will come in the place of the question mark (?) in the following number series?305, 338, 404, 503, 635 , (?)

By what least number should 1200 be multiplied so that it becomes a perfect square?

What is the square root of 5041?

23 x 31 = 713. How much is 0.0713 / 3.1?

Two circles of same radius intersect each other at P and Q. If the length of the common chord is 30 cm and distance between the centres of the two circlesis 40 cm, then what is the radius (in cm) of the circles?

What is the slope of the line 2x + 3y = 12?

How many times does the number 5 occur in the range of numbers from 1 to 100?

The sum of 5/8 and 8/5 is