Aptitude [TCS Placement]: Sample Questions 19 - 21 of 174

Get unlimited access to the best preparation resource for competitive exams : get questions, notes, tests, video lectures and more- for all subjects of your exam.

Question 19

Aptitude
Edit

Write in Short

Short Answer▾

Complete the series 2, 7,24, 77, — -?

Explanation

  • First term of the series is 2.
  • Second term of the series is 7, i.e..
  • Third term of the series is 24, i.e..
  • Fourth term of the series is 77, i.e..
  • Following the same pattern we can find the next term of the series.
  • Next term will be

Question 20

Aptitude

Question

MCQ▾

A can do a piece of work in 20 days and B can do it in 12 days. B worked at it for 9 days. In how many days A alone can finish the remaining work?

Choices

Choice (4)

a.

6

b.

12

c.

8

d.

5

Answer

d.

Explanation

  • A can do a piece of work in 20 days and B can do it in 12 days.
  • B works for 9 days.
  • In 12 days B can complete the whole work
  • So, in one day B can complete work
  • In 9 days B can complete work
  • Yet, 1/4 work is remaining, which A has to complete.
  • A can complete the work in 20 days.
  • So, in one day A can complete work
  • So, to complete 1/4 work, A will take = = 5 days
  • A will complete the remaining work in 5 days.

Question 21

Aptitude
Edit

Write in Short

Short Answer▾

Average age of 18 men is decreased by 1 year when one man whose age is 49 years is replaced by a new man. Find age of the new man.

Explanation

  • Let the average of 18 men be x previously.
  • So, total age of 18 men = 18x
  • It becomes x - 1 when one man of age 49 is replaced by a new man.
  • Let the age of new man be y years.

  • So, age of new man is 31 years.

Developed by: