Pick out the solutions from the values given in the brackets against each question: Find the values that do not satisfy the equation.

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10, 5, 12

12, 10, 15

15, 5, 10

5, 12, 15

answer is D.

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Detailed Solution

Concept- In this case, change the numbers in the brackets to complete the equation 5 m=60.
As a result, some values are provided here in the bracket. TheQuestion states that we must determine whether the values satisfy the provided equation.
The given equation is

5 m = 60

There are four values in the bracket, 10,5,12 and 15 .
Let us check if the values satisfy the equation or not.
Now taking the value of

as 10, LHS

, but RHS is 60 .
So, here we can see that

(as we can see above

)______(1)
So, the value of

cannot be 10 , because it does not satisfy the equation.
Now let us check for 5 . Substituting

as 5 , LHS

, and

.
So, we got LHS as 25 and RHS as 60 which are not equal.
So,

(as we can see above

)________(2)
Hence, the value of

cannot be 5 because it does not satisfy the equation.
Now let's check for 12 . Again substituting

as 12 , LHS

, and we have RHS=60.
So, we got LHS as 60 and RHS as 60 , that is equal.
Therefore, LHS=RHS________(3)
So, the value of

can be 12 because it satisfies the equation.
Now taking

as 15 we get, LHS=5m

, and

.
So, we got LHS as 75 and RHS as 60 which are not equal.
So, the value of

cannot be 15 because it does not satisfy the equation.
So, LHS

(as we can see above

)______(4)
The only value other than 12 that satisfies the equation 5 m=60 is the number, as can be seen from (1), (2), (3), and (4).
So, we get the answer as

, but theQuestion explicitly says that we have to pick up the value from the bracket that does not satisfy LHS=RHS this condition.
Hence, the correct answer is option 4.
Syllabus: CBSE

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