# Tech Mahindra Placement: Sample Questions 8 - 10 of 42

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## Question 8

Edit

### Write in Short

What will be the next term of the series?

1, 3, 8, 19,42, 89, ?

### Explanation

• First term of the series is 1.
• Second term of the series is 3, i.e..
• Third term of the series is 8, i.e..
• Fourth term of the series is 19, i.e..
• Fifth term of the series is 42, i.e..
• Sixth term of the series is 89, i.e..
• Following the same pattern,
• Seventh term of the series will be,

## Question 9

### Question

MCQ▾

Find the value of

Choice (4)

a.

0.845

b.

1.908

c.

2.312

d.

0.001

a.

### Explanation

Let a = 0.75 and b = 0.1

Converting the given equation in general form,

Factors of are

So, solution of will be

So, solution will be option a, 0.845.

## Question 10

Edit

### Write in Short

Among 15 persons, 7 knows French, 8 knows Spanish, while 3 knows no language. Find the fraction of persons who knows both the languages?

### Explanation

• Among 15 persons, 7 knows French, 8 knows Spanish, while 3 knows no language.
• Subtracting 3 persons from 15, , i.e.. only 12 person knows either French or Spanish.
• Among 12,7 knows French and 8 knows Spanish, whose total is 15.
• Subtracting actual number of people from it, i.e.. person knows both the languages.
• 3 person knows both French and Spanish languages.
• As there are total 15 people, a person who knows both the languages is in the ratio of =
• th person of the total knows both French and Spanish.

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