Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

the number of triangle formed by joining the vertices of a hexagon
Asked by lavanya.toshit | 21 Feb, 2023, 09:16: PM
answered-by-expert Expert Answer
Number of vertices of a hexagon = 6
Now, a triangle can be formed by joining three vertices.
Therefore, number of triangles formed equals C presuperscript 6 subscript 3 equals fraction numerator 6 factorial over denominator 3 factorial 3 factorial end fraction equals fraction numerator 6 cross times 5 cross times 4 cross times 3 factorial over denominator 3 factorial 3 cross times 2 end fraction equals 5 cross times 4 equals 20
Answered by Rashmi Khot | 21 Feb, 2023, 09:26: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Maths
the number of triangle formed by joining the vertices of a hexagon
Asked by lavanya.toshit | 21 Feb, 2023, 09:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
How many 4digit even number can be formed by using digit 1,2,3,4,5,7,8,9 If repetation not allowed  If repetation allowed 
Asked by pranshusingh9himalya | 15 Nov, 2022, 01:43: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
How many triangles can be formed by joining any 3 of the 9 points when i) no 3 of them  are collinear? ii) 5 of them are collinear?  
Asked by kandappan | 10 Feb, 2020, 05:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Find n if
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
I have four currency notes valued at Rs 50,100 and 2 notes of 500.In how many ways can I select the currency note ,so that only one type of note is selected each time?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
There are 15 points in a plane, no more than 2 of which are collinear. How many pentagons in all can be made using these points?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
As a part of festive decoration, Mayank go to buy decorative lights. The shopkeeper shows him a box containing 8 flashlights, all of different colors. He only need 3. How many different sets of 3 flashlights can be chosen?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
What are the total number of proper divisors for 900?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
How many triangles can be drawn through 10 points in a plane?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
In how many ways can a student choose a programme of 5 courses if 9 courses are available and 2 courses are compulsory for every student.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Grab Our Exam Special Offer-Enrol now!
×