Alpha-Numeric Sequence Puzzle, Number, Ranking and Time Sequence Test, Logical Sequence of Words and Alphabet Test

**Category : **8th Class

**ALPHA-NUMERIC SEQUENCE PUZZLE**

In such type of questions, a sequence of numbers, letters and symbols is given and a student i5 asked how many times a number/letter/symbol follows a certain rule or which number/letter symbol follows a certain rule.

**EXAMPLE**

**1. How many symbols are there in the given arrangement each of which is not immediately preceded by a digit but immediately followed by a letter?**

4 2 @ + A P 5 > - 6 < T M 4 L Z = 1 - 8 3 D * #

(a) None (b) One

(d) Two (d) Three

**Explanation (b):**

The group having given properties is @ + A.

So, the correct option is (B).

**NUMBER, RANKING AND TIME SEQUENCE TEST**

**Number Test:**

In these type of problems, a sequence of numbers is given and a student is asked questions same as in the way as asked in Alpha-Numeric Sequence Puzzle.

**Ranking Test:**

In ranking test based problems, usually the ranks of one or two persons from the top and from the bottom are mentioned. A student is required to compute either total number of persons or rank of a person.

**2. In a class of 60, the girls are twice that of boys, Karim ranked seventeenth from the top. If there are 9 girls ahead of Karim, how many boys are there after him?**

(a) 3 (b) 10

(d) 12 (d) 15

**Explanation (c):**

Let number of boys = x, then x + 2x = 60

x = 20

There are 16-9=7 boys ahead of Karim. '

Number of boys after Karim =20-1 -7=12

**Time Sequence Test:**

To solve the time based problems the following information are very useful.

- The needles of a clock are called its hands.
- Whenever we are performing problems on two hands of a clock, they are hour and minute hands.
- In every 1 hour, the hour hand rotates 30° and the minute hand rotates 360°.
- The month of February has minimum number of days. These are 28 or 29.
- 1 year = 365 or 366 days.
- The year which is divisible by 4 is called a leap year. e.g., year 2012 is a leap year.
- A century which is divisible by 400 is called a leap year. e.g. 2000 is a leap year but 2100 is not.
- There are 29 days in February of a leap year.
- There are 366 days in a leap year and 365 days in a non-leap year or ordinary year.
- 1 century = 100 years.

**3. If 1st October is Sunday, then 1st November will be _________.**

(a) Monday (b) Tuesday

(d) Wednesday (d) Thursday

**Explanation (c):**

1st, 8th, 15th, 22nd, and 29th October are Sundays.

So, 31st October is Tuesday.

1st November will be Wednesday.

**LOGICAL SEQUENCE OF WORDS**

In such type of problems, some words are given. These words have some relationship amongst one another or have a specific sequence.

A student is required to identify this relationship or sequence and put them in a logical sequence.

This sequence may be according to size, age, need, etc.

**4. Arrange the words given below in a meaningful sequence.**

1. Leaf

2. Fruit

3. Stem

4. Root

5. Flower

(a) 3, 4, 5, 1, 2 (b) 4, 3, 1, 5, 2

(d) 4, 1, 3, 5, 2 (d) 4, 3, 1, 2, 5

**Explanation (b):**

The order of growing a tree is:

Root, Stem, Leaf, Flower, Fruit.

So the correct option is (B).

**ALPHABET TEST**

**English Alphabet:**

The English alphabet contains 26 letters in all.

These starts from A and ends with Z as written below:

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

- The first letter is A. The 10th letter is J.
- The 10th letter from the right is Q.

A rule to find positions of letters is "EJOTY".

Rule |
E |
J |
O |
T |
Y |

Position of letters |
5th |
10th |
15th |
20th |
25th |

**Dictionary:**

A dictionary consists of those letters or words first which commence with A, then B and, so on.

For example, the sequence of letters P, A, M, L and Z in the dictionary is A, L, M, P, Z

For another example, the sequence of words Mango, Apple, Orange, Tomato and Liquid in a dictionary is: Apple, Liquid, Mango, Orange, Tomato.

**5. Which of the following words will come in second place, if all of them are arranged alphabetically as in a dictionary?**

(a) Crude (b) Crumb

(d) Cruise (d) Crupper

**Explanation (c):**

We will consider the fourth letter because first three letters are the same.

The fourth letters are : d, m, i and p. Their order as in dictionary is d, i, m, p.

Therefore, the word in 2nd place is 'Cruise'.

So the correct option is (c).

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