Wednesday 3 August 2022

05 - Logical Reasoning Math Questions with Answers and Explanation (3+2 =7, 5+4 = 23 , 7+6 = 47, 9+8 = 79, 10+9 = ?)

Having good practice on logical reasoning math questions is very important to crack any online written test. To solve logical reasoning math questions, you do not need to know complex math formulas. You just need to have basic math skills (Addition, Subtraction, Multiplication and Division) along with logical thinking.
05 - Logical Reasoning Math Questions with Answers and Explanation (3+2 =7, 5+4 = 23 , 7+6 = 47, 9+8 = 79, 10+9 = ?)
However, the most important thing over here is the time that you are taking to solve the question. If you are able to solve the logical reasoning math question within a minute then you will get enough time to solve other criteria questions which may take more time. So that, you can easily crack any online written test.
How to solve logical reasoning math questions within a minute?
The answer is Practice!!! As I said above, you just need basic math skills, logical thinking skills and practice.

Practice maximum questions which are available here and improve your logical reasoning math skills.

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Logical Reasoning Math Question:
Find the number which replaces the question mark.

3+2 = 7
5+4 = 23
7+6 = 47
9+8 = 79
10+9 = ?

Answer Explanation For Logical Reasoning Math Question:
Take the first equation i.e., 3+2 = 7. Consider this as A+B = C. Then the actual logic behind this is A*B+(B-1) = 3*2+(2-1) = 7. Lets implement this on all the given equations.

3+2 = 7  (Actual Logic: 3*2+1= 7)
5+4 = 23 (Actual Logic: 5*4+3 = 23)
7+6 = 47 (Actual Logic: 7*6+5= 47)
9+8 = 79 (Actual Logic: 9*8+7 =79)
10+9 = ? (Actual Logic: 10*9+8 = 98)

So, the answer is 99.
Tip: Do not look only at the first equation (i.e., 3+2 = 7) and start thinking how it is equal to 7. Look at two or three equations and try to find the common thing in it. In this scenario, the common thing is A*B+(B-1). You may not get it, but you will definitely get it after practicing these kinds of questions regularly.

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37 comments:

Unknown said...

Answer is 99

Unknown said...

98

Unknown said...

Ans 98

K. Vignesh said...

99 answer

Unknown said...

99 is the answer

HI said...

99

Ruchika Ranjan said...

99

swarangi said...

109

Unknown said...

99

DAY2DAYMOVIENEWS said...

98

Unknown said...

99

Dasari Madhavi said...

If 3+2 = 7 -----> 3*2+1=7
5+4 = 23 ------>5*4+3=23
7+6 = 47 ------> 7*6+5=47
9+8 = 79--------> 9*8+7=79
Then, 10+9 = ? ----------> 10*9+9=99

Unknown said...

98

Unknown said...

98

Stranger said...

98

Unknown said...

98

Unknown said...

99 is the answer

Unknown said...

18

Unknown said...

98

Unknown said...

98

Unknown said...

If 3+2 = 7 -----> 3*2+1=7
5+4 = 23 ------>5*4+3=23
7+6 = 47 ------> 7*6+5=47
9+8 = 79--------> 9*8+7=79
Then, 10+9 = ? ----------> 10*9+8=98


Ans:- 98

Unknown said...

Ans is 99

Unknown said...

3*2+1=7
5*4+3=23
7*6+5=47
9*8+7=79
10*9+9=99

Knowledge site 2020 said...

99

Unknown said...

99

Unknown said...

this answer can be 99 if the question will be 10+10
but here the trick in this question is for the 2nd element is now an odd number='9'
the method of adding incremented odd value can not be applicable.so,we have to follow the rule A*B+(B-1)=Ans

Unknown said...

99

NiranjanV said...

98

NiranjanV said...

Exactly , the correct answer is "98"
Bcz from the beginning it follows a particular logic i.e A+B-(B-1) = 3*2-(1)=5 , So at the end also follows the same ,
10*9-(9-1) = 98.//

Unknown said...

99

Unknown said...

115

Unknown said...

answer is 99

Anjali said...

3*2+1=7 5*4+3=23 7*6+7=49 8*9+7=79 10*9+9=99

Pawan Kumar said...

Answer is-98

manikanta said...

91

Anonymous said...

3+2=7 '3*2+1=7'
5+4=23 '5*4+3=23'
7+6=49 '7*6+5=49'
8+9=79 '8*9+7=79'
10+9=? '10*9+9=99

Harika Sravanthi said...

99

 
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