# Arithmetic (IAS (Admin.) Prelims CSAT Paper-II (Aptitude)): Questions 8 - 11 of 42

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## Question number: 8

» Arithmetic » Basic Statistics

Appeared in Year: 2017

MCQ▾

### Question

There are thirteen 2-digit consecutive odd numbers. If 39 is the mean of the first five such numbers, then what is the mean of all the thirteen numbers?

### Choices

Choice (4) Response

a.

47

b.

45

c.

51

d.

49

## Question number: 9

» Arithmetic » Basic Statistics

Appeared in Year: 2017

MCQ▾

### Question

Four tests—Physics, Chemistry, Mathematics and Biology are to be conducted on four consecutive days, not necessarily in the same order. The Physics test is held before the test which is conducted after Biology. Chemistry is conducted exactly after two tests are held. Which is the last test held?

### Choices

Choice (4) Response

a.

Mathematics

b.

Biology

c.

Chemistry

d.

Physics

## Question number: 10

» Arithmetic » Numbers and Counting » Base Numbers

Appeared in Year: 2017

MCQ▾

### Question

A 2-digit number is reversed. The larger of the two numbers is divided by the smaller one. What is the largest possible remainder?

### Choices

Choice (4) Response

a.

27

b.

45

c.

95

d.

36

## Question number: 11

» Arithmetic » Ratio, Proportion and Chain Rule

Appeared in Year: 2017

MCQ▾

### Question

If there is a policy that 1/3rd of a population of a community has migrated every year from one place to some other place, what is the leftover population of that community after the sixth year, if there is no further growth in the population during this period?

### Choices

Choice (4) Response

a.

32/243rd part of the population

b.

64/729th part of the population

c.

32/729th part of the population

d.

16/243rd part of the population