UrbanPro

Take Class 9 Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Search in

At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party? A: 30 B: 12 C: 14 D: 25

Asked by Last Modified  

3 Answers

Learn Class 9 +1  Class 10 Situational problems based on quadratic equations.

Follow 4
Answer

Please enter your answer

Maths and Science Grade 8-10 SSC and CBSE tuitions

B 12
1 Comments

An Engineer

Use the sum of AP series concept, where Sn= 66, first term a1=1, common difference d=1, then find n. Putting all the values in the formula of Sn we get, n^2+n-132=0 Required answer= n+1 which will come to be 12 (OPTION B)
Comments

If there are N people then there would be shakehands with N-1 people. N(N-1)/2 = 66 N^2 - N - 132=0 N=12 people in the party. Option B is the right answer.
Comments

View 1 more Answers

Related Questions

Sun: Largest source of energy is made up of?

Organic molecules.hydrocarbons.fossil fuels.hydrogen and carbon mainly.
Deepika T.
Which science books should I prefer in class 9?
Arihant books are good , don't skip NCERT as they are fundamental books
Mohit
How do I score 90 marks in Maths for CBSE in class 10?
Just go through your text books,solved examples.concepts should be clear for each topic.try to do more practice in each topic from initially so that no burden will left further.
Navneet
Is taking a lot of tuition helpful for class 10?
Maths ,science .if you have any questions please let me know you are joining tuition. Self study mostly important but some qury difficulties guidelines also important. Best wishes
Mohammad
0 0
9
Find the area of an equilateral triangle with side 10 cm.
side = 10cm formula for the area=root 3/4square of side =1.732/4*100 =43.3cm sq
Kishore
0 0
5

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons



ENGLISH
QUESTION 1.I'm taking a Japanese ___ at the moment. I'm going to have fish for my main ___. 2. n. euphony (a) tedious dwelling on a subject (b) a building where animals are butchered; slaughterhouse...

As Dhatoo Roop (अस् धातुरूप)
लट् लकार: (present tense ) एकवचनम् द्विवचनम् बहुवचनम् प्रथमपुरुष: अस्ति स्तः सन्ति मध्‍यमपुरुष: असि स्थः स्थ उत्‍तमपुरुष: अस्मि स्वः स्मः लृट् लकार:...

Class 9 science
Matter in our surrounding what is matter? This question you have heard many times but can you explain what's its mean in science. Anything that occupies space and have mass is called matter. Matter...

Recommended Articles

Once over with the tenth board exams, a heavy percentage of students remain confused between the three academic streams they have to choose from - science, arts or commerce. Some are confident enough to take a call on this much in advance. But there is no worry if as a student you take time to make choice between - science,...

Read full article >

While schools provide formal education to the children, the home is where they start learning about things informally. Parents think that schools will take the initiative to educate their children. Well, this is partially true, as parents also play an essential role in bringing up their child. For the development of particular...

Read full article >

Learning for every child starts from a very young age. While the formal methods include school curriculums and private lessons, the informal methods include dancing, music, drawing, and various fun-filling activities. Playing games and practising these types of activities helps the children get out of boredom and...

Read full article >

With the mushrooming of international and private schools, it may seem that the education system of India is healthy. In reality, only 29% of children are sent to the private schools, while the remaining head for government or state funded education. So, to check the reality of Indian education system it is better to look...

Read full article >

Looking for Class 9 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for Class 9 Tuition Classes?

The best tutors for Class 9 Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Class 9 Tuition with the Best Tutors

The best Tutors for Class 9 Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more