Samacheer Kalvi solutions for Mathematics [English] Class 8 TN Board chapter 7 - Information Processing [Latest edition]

You want to have an ice cream or a cake. There are three flavours (chocolate, strawberry and vanilla) in ice creams, and two flavours (orange and red velvet) in the cakes. In how many possible ways can you choose an ice cream or a cake?

Shanthi has 5 churidar sets and 4 frocks. In how many possible ways, can she wear either a churidar or a frock?

In a Higher Secondary School, the following groups are available in XI standard

I. Science Group:
(i) Physics, Chemistry, Biology and Mathematics
(ii) Physics, Chemistry, Mathematics and Computer Science.
(iii) Physics, Chemistry, Biology and Home Science

II. Arts Group:
(i) Accountancy, Commerce, Economics and Business Maths
(ii) Accountancy, Commerce, Economics and Computer Science
(iii) History, Geography, Economics and Commerce

III. Vocational Group:
(i) Biology, Nursing Theory, Nursing Practical I and Nursing Practical II
(ii) Home Science, Textiles and Dress Designing Theory, Textiles and Dress Designing Practical I and Textiles and Dress Designing Practical Il

In how many possible ways, can a student choose a group?

If you have 2 school bags and 3 water bottles then, in how many different ways can you choose each one of them, while going to school?

Roll numbers are created with a letter followed by 3 digits in it, from the letters A, B, C, D and E and any 3 digits from 0 to 9. In how many possible ways can the roll numbers be generated? (except A000, B000, C000, D000 and E000)

A safety locker in a jewel shop requires a 4 digit unique code. The code has the digits from 0 to 9. How many unique codes are possible?

An examination paper has 3 sections, each with five questions and students are instructed to answer one question from each section. In how many different ways of can the questions be answered?

The given spinner is spun twice and the two numbers got are used to form a 2 digit number. How many different 2 digits numbers are possible?

Ramya wants to paint a pattern in her living room wall with minimum budget. Help her to colour the pattern with 2 colours but make sure that no two adjacent boxes are the same colour. The pattern is shown in the picture.

Colour the regions in the maps with few colours as possible but make sure that no two adjacent countries are of the same colour

In a class there are 26 boys and 15 girls. The teacher wants to select a boy or a girl to represent a quiz competition. In how many ways can the teacher make this selection?

How many outcomes can you get when you toss three coins once?

In how many ways can you answer 3 multiple choice questions, with the choices A, B, C and D?

How many 2 digit numbers contain the number 7?

Using repeated division method, find the HCF of the following:

455 and 26

Using repeated division method, find the HCF of the following:

392 and 256

Using repeated division method, find the HCF of the following:

6765 and 610

Using repeated division method, find the HCF of the following:

184, 230 and 276

Using repeated subtraction method, find the HCF of the following:

42 and 70

Using repeated subtraction method, find the HCF of the following:

36 and 80

Using repeated subtraction method, find the HCF of the following:

280 and 420

Using repeated subtraction method, find the HCF of the following:

1014 and 654

Do the given problems by repeated subtraction method and verify the result

56 and 12

Do the given problems by repeated subtraction method and verify the result

320, 120 and 95

Kalai wants to cut identical squares as big as she can, from a piece of paper measuring 168 mm and by 196 mm. What is the length of the side of the biggest square? (To find HCF using repeated subtraction method)

What is the eleventh Fibonacci number?

If F(n) is a Fibonacci number and n = 8, which of the following is true?

Every 3^rd number of the Fibonacci sequence is a multiple of _______

Every _______ number of the Fibonacci sequence is a multiple of 8

The difference between the 18^th and 17^th Fibonacci number is

Common prime factors of 30 and 250 are

Common prime factors of 36, 60 and 72 are

Two numbers are said to be co-prime numbers if their HCF is

G Z N R O = _____________________________

V M T O R H S = _____________________________

N Z G S V N Z G R X H = _____________________________

H X R V M X V = _____________________________

H L X R Z O H X R V M X V = _____________________________

Match the following :

( a = 00……………. Z= 25)

Frame Additive cipher table (key = 4)

A message like “Good Morning” written in reverse would instead be “Doog Gninrom” In the same way decode the sentence given below:

“Ot dnatsrednu taht scitamehtam nac eb decneirepxe erehwreve ni erutan dna laer efil” 

Decode the given Pigpen Cipher text and compare your answer to get result.

The room number in which the treasure took place

Decode the given Pigpen Cipher text and compare your answer to get result.

Place of the treasure

Decode the given Pigpen Cipher text and compare your answer to get result.

The name of the treasure

Praveen recently got the registration number for his new two-wheeler. Here, the number is given in the form of mirror-image. Encode the image and find the correct registration number of praveen’s two-wheeler.

In there are four groups of letters in each set. Three of these sets are alike in some way while one is different. Find the one which is different

In there are four groups of letters in each set. Three of these sets are alike in some way while one is different. Find the one which is different

A group of letters are given. A numerical code has been given to each letter. These letters have to be unscrambled into a meaningful word. Find out the code for the word so formed from the 4 answers given

Question is based on code language. Find the correct answer from the four alternatives given.

In a certain code, ‘M E D I C I N E’ is coded as ‘E O J D J E F M’, then how is ‘C O M P U T E R’ written in the same code?

Question is based on code language. Find the correct answer from the four alternatives given.

lf the word ’P H O N E’ is coded as ’S K R Q H’, how will ‘R A D I O’ be coded?

Find the best buy of the following purchases:

A pack of 5 chocolate bars for ₹ 175 or 3 chocolate bars for ₹ 114?

Find the best buy of the following purchases:

Basker buy `1 1/2` dozen of eggs for ₹ 81 and Aruna buy 15 eggs for ₹ 64.50?

Using the given picture find the total special offer price of fresh sweets and bakery products to buy `1/2` kg laddu, 1 kg cake, 6 pockets of bread

Using the given picture prepare a price list.

Suppose you plan to buy `1 1/2` kg of apple, 2 kg of pomegranate, 2 kg of banana, 3 kg of mango, `1/2` kg of papaya, 3 kg of onion, `1 1/2` kg of tomato, and 1 kg of carrot in shop 1, how much will you save compared to shop 2.

You want to buy some grocery items as per your shopping list that are given in the picture with their price. Also you have a bag that capacity of carrying 7 kg. Using weight ratio approach tabulate to find the total price and how much can you buy more grocery items within your budget of ₹ 1000 and not exceeding 7 kg.

Online or television advertisements influence people on spending decisions by

When I go shopping, I will buy 

The best shopping choice is to