Quantitative Aptitude - Arithmetic Ability Questions

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

X does 25% of a work in 20 days. Y joins X and they together finish the remaining work in 15 days. Y alone can do the whole work in ___ days.

Due to increase of k% in the side, the area of a square increases by 69%. What is the value of k?

Two numbers are in the ratio 3:5. If 6 is added to both of them, the ratio becomes 2:3. The numbers are

If a website is selling smartphone at Rs 18,000 which is marked at Rs 25,000, then what is the discount (in %) at which the smartphone is being sold?

The first and last terms of an arithmetic progression are 25 and ­52. What is the sum of the series if it has 12 terms?

Find the odd one out.

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