Quantitative Aptitude - Arithmetic Ability Questions

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

The average of ten numbers is 18. If one number is removed, then the average becomes 16, then what is the removed number?

A man misses a train by 1 hour if he travels at a speed of 4 kmph. If he had increased his speed to 5 kmph, he would gave still missed the train by 24 minutes. At what speed should he have travelled so that he reached the station exactly on time?

Neeraj's earning was decreased by 60% and after that subsequently increased by 60%. Find the final loss % on his earnings?

Neeraj purchased a few shirts for his shop at cost prices ranging from Rs. 400 to Rs. 550 and sold at prices ranging from Rs. 450 to Rs. 650. What is the maximum profit that might be made in selling 10 shirts?

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

If the cost price of 20 books is the same as selling price of 25 books, then the loss percentage is

If x+5+1x+1=6 then the value of (x+1)3+1(x+1)3 is