Tech Mahindra Placement: Sample Questions 37 - 39 of 42

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Question 37

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Short Answer▾

Sum of money at compound interest amounts thrice itself in 3 years. In how many years will it take 9 times itself?

Explanation

  • For compound interest,

  • We are asked to fin number of years when money will be 9 times the original.

  • In 6 years, sum will be 9 times the original amount.

Question 38

Question

MCQ▾

The price of sugar increases by 20 % , by what % house-wife should reduce the consumption of sugar so that expenditure on sugar can be same as before?

Choices

Choice (4)

a.

15 %

b.

16.66 %

c.

9 %

d.

12 %

Answer

b.

Explanation

  • If the price of any product gets increased by R % then to reduce the consumption of product so that expenditure does not increase, we need to apply this formula.
  • Here, price of sugar gets increased by 20 % . So, house wife should reduce the consumption of sugar so that expenditure on sugar can be same as before by applying,

=

=

= 16.66 %

  • House wife should reduce the consumption of sugar by 16.66 % .

Question 39

Question

MCQ▾

Complete the following series.

________ , ayw, gec, mki, sqo

Choices

Choice (4)

a.

lmn

b.

awx

c.

usq

d.

prs

Answer

c.

Explanation

  • Alphabets in series is: a b c d e f g h i j k l m n o p q r s t u v w x y z
  • Alphabets in reverse order is: z y x w v u t s r q p o n m l k j i h g f e d c b a
  • Second term of the series is ayw, in which we have taken every alternate letter of alphabets to make a term.
  • Same way, third term is gec, in which again alternate letters are making a term.
  • Same way, fourth term is mki, in which again alternate letters are making a term.
  • Same way, fifth term is sqo, in which again alternate letters are making a term.
  • Applying the same analogy, first term will be usq from the reverse alphabetical series.

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