Quantitative Aptitude - Arithmetic Ability Questions

What is the value of √121 + √12321 + √1234321 + √123454321?

The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The 15th observation is

How many numbers divisible by 125 can be written by using all the digits 2,3,8,7,5 exactly once?

The two equal sides of an isosceles triangle is 20 cm each and the third side is 30 cm. What is the area(in cm2) of the triangle?

If sin ­- 5π/3 = x, then the value of x is

If 7x ­- 5y = 13 and 2x -­ y = 5, then (x -­ y) is

Select the odd word/letters/number/number pair from the given alternatives.

The average revenues of 7 consecutive years of a company is Rs 75 lakhs. If the average of first 4 years is Rs 70 lakhs and that of last 4 years is Rs 82 lakhs, what will be the revenue for the 4th year.