Quantitative Aptitude - Arithmetic Ability Questions

Find the value of 200 x 20 x 2 x 0.2 x 0.02 x 0.002 = ?

x and y are two numbers such that their mean proportion is 8 and third proportion is 512. What is the value of x and y?

Two trains are moving in the opposite directions at speed of 43 km/h and 51 km/h respectively. The time taken by the slower train to cross a man sitting in the faster train is 9 seconds. What is the length (in metres) of the slower train?

The mean of marks secured by 50 students in division A of class X is 61, 25 students of division B is 57 and that of 50 students of division C is 55. What will be the mean of marks of the students of three divisions of Class X?

O is the orthocentre of∆ABC, and if ∠BOC = 110° then ∠BAC will be

(45.004% of 1439.97 –15.99% of 2249.97) ÷ 35.98 = ?

One of the diagonal of a rhombus is 70% of the other diagonal. What is the ratio of area of rhombus to the square of the length of the larger diagonal?

In the following question, select the odd number from the given alternatives.