Do you love mathematics? Are you thinking always to unveil the logic hidden behind a **number or a letter puzzle**? Your search could get a nice response here. Please try to solve these puzzles at your brain. This will be your brain-work as well your mind-exercise.

All the puzzles given here, are important for your preparation in upcoming competitive exams and corporate placements. So try to solve them carefully and successfully if you want to be a successful professional.

**Q1.** Find the missing number below:

**Answer Option:**

a.) 10

b.) 13

c.) 16

d.) None of the above

### Answer

### Answer

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**Q2.** Find the missing number below:

**Answer Option:**

a.) 12

b.) 19

c.) 23

d.) None of the above

### Answer

### Answer

### Explanation

### Explanation

In the second column, 14 x 7 + 7 = 105.

Let the missing number in the third column be x.

Then, 9x+9 = 117 or 9x = 108 ∴x=12.

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**Q3.** Find the missing letter:

**Answer Option:**

a.) A

b.) M

c.) K

d.) Z

### Answer

### Answer

### Explanation

### Explanation

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**Q4.** Which number will replace the question mark in the following figure?

**Answer Option:**

a.) 4

b.) 40

c.) 80

d.) None of the above

### Answer

### Answer

### Explanation

### Explanation

In the second column, 54 + 45 x 2 = 144.

Let the missing number in the third column be x.

Then, x + (32 x 2) = 68

x = 68 – 64 = 4

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**Q5.** Which number will replace the question mark in the following figure?

**Answer Option:**

a.) 5

b.) 18

c.) 23

d.) 49

### Answer

### Answer

### Explanation

### Explanation

In the second row (2 x 13) + (3 x 11) = 59

Let the missing number in the first row is x.

Then, 2x + (3 x 13) = 49, or x = 5

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**Q6.** Which number will replace the question mark in the following figure?

**Answer Option:**

a.) A

b.) P

c.) T

d.) W

### Answer

### Answer

### Explanation

### Explanation

The letters in the second row follow the sequence +6, +8

The letters in the third row follow the sequence +7, +9

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