Quantitative Aptitude - Arithmetic Ability Questions

The LCM of 56, 84 and 112 is

How many three digit numbers are there in which all the digits are odd?

The average of 9 observations was found to be 35. Later on, it was detected that an observation 81 was misread as 18. The correct average of the observations is

If curved surface area of a cylinder is 1386 sq cm and height is 21 cm, what will be its radius? (Take π = 22/7)

The sum of a non-zero number and 4 times its reciprocal is 17/2. What is the number?

The perimeter and the breadth of a rectangle are 60 cm and 14 cm respectively. Find its area (in cm²)

The measures of the four angles of a quadilateral are in the ratio 3:4:5:6. What is the measure of the biggest angle?

What is the value of √[(1 ­- cosA)/(1 + cosA)]?