Number Puzzle - Involving Triangles
Number Puzzle - Involving Triangles
Number Puzzle : Problems involving Triangles:
Various Types of Relationships
(i) n (a + b + c) = d, where n is a number
(ii)
(iii)
(iv)
(v)
Example : Find the missing number:
A. 34 B. 27 C. 28 D. 29
Answer : 29
Explanation : The product of the two largest numbers minus the square of the smallest. It can be explained as :
Triangle 1 : Product of Two Largest numbers = 7 X 5 = 35
Square of third smalled number = . So answer will be 35 - 9 = 26.
Applying this rule in the forth triangle : Product of largest two numbers = 5 X 9 = 45. Subtracting the square of smallest third number = 16
, So the missing number is 45 -16 = 29
Example : Find the missing number
A. 9 B. 10 C. 11 D. 12
Answer : 9
Explanation : In each triangle, multiply the lower two numbers together and add the upper number to give the value in the centre.
In triangle 1 : Multiply lower two numbers (numbers at the base) = 6 X 2 = 12
Add the third number = 12 + 7 = 19
Similarly in triangle 3 : Multiply lower two numbers = 2 x y (let the unknown be y)
Add the third number = 2y + 5 = 23
Subtracting 5 from both sides : 2y + 5 - 5 = 23 - 5
2y = 18
y = 9. Hence answer is 9.
Which number replaces the question mark (?)
| |||
| Right Option : B | |||
| View Explanation | |||
Directions : Find the missing character in each of the following.
| |||
| Right Option : B | |||
| View Explanation | |||
Directions : Find the missing character in each of the following.
| |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
