Quantitative Aptitude - Arithmetic Ability Questions

The maximum number of common tangents that can be drawn to two disjoint circles is

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?

Find the missing digit if it has 11 and 13 as factors?

If the number 247_679 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be

The average weight of 30 students in a class is 25 kgs. If the weight of the class teacher is added, the average weight increase by 2 kgs. The weight of the class teacher in kgs is

If D and E are points on the sides AB and AC respectively of a triangle ABC such that DE||BC. If AD = x cm, DB = (x – 3) cm, AE = (x + 3) cm and EC= (x – 2) cm, then what is the value (in cm) of x?

The simple and compound interest that can be earned in two years at the same rate is Rs 1,000 and Rs 1,040 respectively. What is the rate (percent per annum) of interest?

A sum of Rs 4000 becomes Rs 5800 in 3 years, when invested in a scheme of simple interest. If the same sum is invested in a scheme of compound interest with same yearly interest rate (compounding of interest is done yearly), then what will be the amount (in Rs) after 2 years?