CBSE Class 7 - Mathematics - Chapter – 12 - Algebraic Expressions - NCERT Solution 12.1 (#NCERTAnswers)

Chapter – 12 - Algebraic Expressions
NCERT Exercise 12.1

Question 1: Get the algebraic expressions in the following cases using variables, constants and arithmetic operations:

(i) Subtraction of z from y .
(ii) One-half of the sum of numbers x and y .
(iii) The number z multiplied by itself.
(iv) One-fourth of the product of numbers p and q .
(v) Numbers x and y both squared and added.
(vi) Number 5 added to three times the product of m and n .
(vii) Product of numbers y and z subtracted from 10.
(viii) Sum of numbers a and b subtracted from their product.


Answer:
(i) y - z

(ii)
(x+y)
-----
 2

(iii)  z²

(iv)  pq
     ----
       4

(v)   x² + y²

(vi) 3mn + 5

(vii) 10 - yz

(viii) ab - ( a + b )

CBSE Class 12 - Business Studies - Ch4 Directing (Practice Test) (#cbseNotes)

PRACTICE TEST

SUBJECT: DIRECTING
(BUSINESS STUDIES)

Max. Time : 50 min. M.M. 25

1. Supervision needs effective communication in the organisation. Comment. 1

2. How does communication help in increasing managerial efficiency? 1

3. What is Laissez-faire leadership style? 1

4. "Resistance from people to introduce changes in the organisation can be removed through motivation". Explain.
1

CBSE Class 12 - Physics - Chapter 9 - Electronics Devices - Revision Sheet (#cbseNotes)

CHAPTER 9 - ELECTRONIC DEVICES - REVISION ASSIGNMENT 

1 MARK QUESTIONS

1.  In a semiconductor which of the following carries can contribute to the current?
(a) Electrons
(b) Holes
(c) Both
(d) None

2. A semiconductor diode has ______
(a) One PN junction
(b) Two PN junctions
(c) Three PN junctions
(d) Four PN junctions

3. If the arrow of diode symbol is positive with respect to bar, then the diode is ______ biased

4.  The DC resistance of a diode is _______ its AC resistance.

5. If the temperature of the diode increases,then leakage current ________.

CBSE Class 9 - Maths - Chapter 10 - Circles - Important Terms You Should Know (#cbseNotes)

Chapter 10 - Circles - Important Terms You Should Know

1. A circle is a collection (set) of all those points in a plane, each one of which is at a constant distance from a fixed point in the plane.


2. The fixed point is called the centre and the constant distance is called the radius of the circle.

3. All the points lying inside a circle are called its interior points and all those points which lie outside the circle are called its exterior points.

4. The collection (set) of all interior points of a circle is called the interior of the circle while the collection of all exterior points of a circle is called the exterior of the circle.

5. A line segment joining two points on a circle is called the chord of the circle.

CBSE Class 10 - French - Translation Exercise -1 (#cbseNotes)

CBSE Class 10 - French -
Translation Exercise -1

Q: Traduire les phrases anglaises suivantes en français.
   Translate the following English sentences into French


1. It does not fit me.

2. Is it on sale?

3. How are you?

4. I am fine, thank you.

5. I would like a quiet room.

English Vocabulary: 30 Commonly Used Phrasal Verbs You Must Know (#cbseNotes) (#EnglishVocabulary)

30 Commonly Used Phrasal Verbs
You Must Know

A phrasal verb is a group of words that functions as a verb and is made up of a verb plus a preposition, an adverb, or both. Phrasal verbs are very common in English usage. Therefore it is important to learn about these verbs. Moreover, the meaning of a verb often changes significantly when it is used in a phrasal verb.


1. bring about : cause

2. bring up : rear children

3. call back : return a telephone call

4. call off : cancel

5. catch up : reach the same position or level

6. check in : register at a hotel

CBSE Class 12/ 11 - Informatics Practices - Java Practical Snippet-1 - Leap Year Testing (#cbseNotes)

Java Practical Snippet-1
Leap Year Testing  

Question: Input a year and check if the year is leap year or not.

Answer: