Test your brain: IQ questions with answers

Test your brain: IQ questions with answers & explanations:

Question 1: Test your brain: Find the missing number:

Test your brain: Find the missing number

Answer:

We have a square matrix of 3 rows & 3 columns. You need to find the unknown quantity in this matrix.

It is a bit tricky intelligence question. You can provide answer for it in the comment section at the end of this post but if you need help in any step or want to know the complete procedure then we have solved it for you. Please click on the button “Show / Hide Answer” below to reveal its step by step solution.

First 2 entries in the first column are: 3, 5

When we add them “3 + 5 = 8” & divide by 2, “8 / 2 = 4” then we get the third entry in first column.

Repeating the same procedure to solve the second column

First 2 entries of second column are: 6, 8

Adding them = 14

Dividing by 2 = 7

Hence it is equal to third entry in second column

Solving the third column:

First 2 entries = 8, 4

Adding them = 12

Dividing by 2 = 6

Hence it is the third entry in third column

Answer = 6

Question 2: Test your brain: Solve the following IQ:

Test your brain: Solve IQ

If 7 + 7 = 2

8 + 8 = 4

8 + 5 = 1

6 + 9 = 3

10 + 11 = 9

Then, 4 + 9 = ?

Answer:

It is a logical math question with a catch. Find a suitable pattern first & then solve this question using the same pattern. We would encourage you to solve this IQ yourself but if you need help in a step or want to see the complete procedure then we have provided step by step procedure below. Click on “Show / Hide Answer” button & you can reveal all steps.

Consider first equation:

7 + 7 = 2

When we add numbers on L.H.S. & subtract 12 from it, we get the result on R.H.S.

7 + 7 = 14 – 12 = 2

Now using the same pattern for second equation:

8 + 8 = 16 – 12 = 4

Hence Proved: This pattern is valid.

Now consider last equation with unknown:

4 + 9 = 13 – 12 = 1

Answer = 1

Question 3: Solve this IQ with your mind:

Solve this IQ with mind

If,

212 = 6

327 = 9

624 = 4

330 = 10

Then,

515 = ?

Answer:

We encourage you to solve this question yourself. But if you want help in a step or want to learn the complete procedure then check out our answer with step by step explanation. Click on “Show / Hide Answer” to reveal our steps. Please provide your answer at the end of this post.

It is clearly a logical IQ as 212 can never be equal to 6. So for every logical question, you need to devise a pattern.

Consider first equation:

212 = 6

L.H.S. = 212

Divide second & third entry by first,

12 / 2 = 6 = R.H.S.

Now using same pattern in second equation:

327 = 9

Divide second & third entry by first,

27 / 3= 9 = R.H.S.

Hence this pattern works.

Now consider final equation:

515 = ?

15 / 5 = 3

Answer = 3