Mathematical Operations - Interchanging of Symbols
Mathematical Operations - Interchanging of Symbols
Mathematical Operations: As you know that in the questions based on simple mathematical operations the four fundamental mathematical operations that is addition, subtraction, multiplication and division and relational operators that is less that, more than etc are to be rearranged to get the desired result.
Making Equation Correct by Interchanging the Symbols: In these type of questions certain equations are written and the candidate is asked to interchange the position of the symbols or numbers so that the equation becomes correct.
Illustration: In the following question , the given equation becomes correct after interchanging two signs. One of the four alternatives under it specifies the interchange of signs in the equation which when made will make the equation correct. Find the correct alternative.
A. + and x B. and x C.
and - D. + and -
Answer: C
Solution: On interchanging and -, we get
= 9 + 5 -2
= 12 = R.H.S.
Illustration: In the following question , the given equation becomes correct after interchanging two signs. One of the four alternatives under it specifies the interchange of signs in the equation which when made will make the equation correct. Find the correct alternative.
A. + and - B. C.
D.
Answer : D
Solution: On interchanging , we get
Illustration: If the given interchanges namely : signs + and and numbers 2 and 4 are made in signs and numbers, which one of the following four equations would be correct ?
(a) 2 + 4 3 = 3 (b) 4 + 2
6 = 15 (c) 4
2 + 3 = 4 (d) 2 + 4
6 = 8
Answer: D
Solution : - on interchanging (+ and ) and (2 and 4), we get,
(a) which is false.
(b) which is false
(c) which is false.
(d) which is true.
Hence, the answer is (d).
In each of the following questions, which one of the four interchanges in signs and numbers would make the given equation correct? (6 | |||
| Right Option : D | |||
| View Explanation | |||
Correct the following equation by interchanging two signs (out of +,-,×,÷): 5 × 15 ÷ 7 - 20 + 4 = 77 | |||
| Right Option : C | |||
| View Explanation | |||
If 20 - 10 means 200, 8 | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
I 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
7thMy 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
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
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.
Aman Kumar Shrivastava
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
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
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thIt 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
10thAbhyas 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.
