Quantitative Aptitude - Arithmetic Ability Questions

What is the unit place digit in the expansion of  773?

If a - b = -5 and a2+b2=73, then find ab.

Type 1 workers can do three times the work of Type 2 workers. Twelve Type 1 workers can complete a task in 10 days. How many days would it have taken 4 Type 1 and 8 Type 2 workers to complete the same task?

What is the length of the arc whose central angle is 30° and radius of the circle is 21 cm?

If the cost price of an article is Rs x . It is marked up by 100%. It is sold at Rs 1,200 after giving 20% discount. What is value of x?

Choose the word is least like the other words in the group

Prahlad has done 1/3rd of a job in 30 days, Sarfaraz completes the rest of the job in 90 days. In how many days can they together do the job?

The average marks of 56 students is shown as 60. It includes a wrong entry of 92 marks instead of 29 marks. The correct average is _____ .