Quantitative Aptitude - Arithmetic Ability Questions

The figure shown below consists of the tangents at the extremeties of any chord. Choose the correct option given below.

If √20 + √125 = 15.65, then what is the value of √45 + √5?

Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work ?

Find length of the arc whose central angle is 90° and radius of the circle is 3.5 cm?

Convert decimal number 101 to binary.

Two buses are moving towards each other with speed of 20 km/hr and 34 km/hr respectively. What will be the distance (in metres) between the two buses one second before they collide?

A student, by mistake, wrote 64 in place of 46 as a number at the time of finding the average of 10 given numbers & got the average as 50. The correct average of the numbers is

A batsman makes a score of 111 runs in the 10th match and thus increases his average runs per match by 5. What will be his average after the 10th match?