The correct answer is option 2  i.e. 17.

There are 17 triangles in the given figure.

Triangles are = ABC, ACF, BCD, BCE, BDE, BCI, CDI, CEL, CJM, CFG, CFM, FGM, FHM, GHM, IJH, JKL, and KMN.

Hence, the correct answer is 17.

The correct answer is option 1.

After unfolding, the paper will appear as follows:

Hence, the correct answer is Option 1.

The correct answer is Option 2 i.e. 5

From the given figures, 6 is common in both figures.

So, 2 will be opposite 4, and 3 will be opposite 5.

So the sum is 3 + 2 = 5.

Hence, 5 is the correct answer.

The correct answer is option 1 i.e. ÷ and-.

Given equation: 3 × 144 - 6 ÷ 40 + 20 = 52

Option 1: ÷ and -

After interchanging the expression becomes:

3 × (144 ÷ 6) - 40 + 20 = 52 

⇒ (3 × 24) - 40 + 20 = 52 

⇒ 72 - 40 + 20 = 52 

⇒ 92 - 40 = 52 

⇒ 52 = 52

Hence, the correct answer is ÷ and-.

The correct answer is option 1 i.e. + and ×.

Given equation: 25 + 8 ÷ 40 - 20 × 25 = 10

Option 1: + and ×

After interchanging the expression becomes:

⇒ {25 × (8 ÷ 40)} - 20 + 25 = 10

⇒ 5 - 20 + 25 = 10

⇒ 30 - 20 = 10

⇒ 10 = 10

As we have found our answer, there is no need to check further options.

Hence, the correct answer is + and ×.

The correct answer is Option 4 i.e. -, ×, +, ÷, =

Given equation: 69 * 23 * 2 * 42 * 2 * 44

After replacing '*' with the mathematical sign given in Option '1' we get:

69 + 23 × 2 - 42 ÷ 2 = 44

69 + 23 × 2 - 21 = 44

69 + 46 - 21 = 44

115 - 21 = 44

94 ≠ 44

So, the sign given in Option '1' will not balance the equation.

After replacing '*' with the mathematical sign given in Option '2' we get:

69 ÷ 23 + 2 × 42 - 2 = 44

3 + 2 × 42 - 2 = 44

3 + 84 - 2 = 44

87 - 2 = 44

85 ≠ 44

So, the sign given in Option '2' will not balance the equation.

After replacing '*' with the mathematical sign given in Option '3' we get:

69 ÷ 23 × 2 - 42 + 2 = 44

3 × 2 - 42 + 2 = 44

6 - 42 + 2 = 44

8 - 42 = 44

-34 ≠ 44

So, the sign given in Option '3' will not balance the equation.

After replacing '*' with the mathematical sign given in Option '4' we get:

69 - 23 × 2 + 42 ÷ 2 = 44

69 - 23 × 2 + 21 = 44

69 - 46 + 21 = 44

90 - 46 = 44

44 = 44

So, the sign given in Option '4' will balance the equation.

Hence, the correct answer is -, ×, +, ÷, =.

The correct answer is option 2 i.e. ×, +, ×, −, =.

Given equation: 10 * 18 * 19 * 2 * 1 * 217

Option 2: ×, +, ×, −, =

After interchanging the expression becomes:

10 × 18 + 19 × 2 − 1 = 217

180 + 38 − 1 = 217

218 - 1 = 217

217 = 217

The correct answer is Option 3 i.e. 63.

Given equation: 12 + 5 - 24 × 3 ÷ 5

Given conditions: +’ means ‘×’, ‘÷’ means ‘-’, ‘-’ means ‘+’, and ‘ב means ‘÷’

After interchanging the expression becomes:

= 12 × 5 + 24 ÷ 3 - 5

= 12 × 5 + 8 - 5

= 60 + 8 - 5

= 68 - 5

= 63

Hence, 63 is the correct answer.

The correct answer is option 2 i.e. 56.

Given equation: 117 - 13 ÷ 6 + 24 × 26

Given conditions: '+' means '-', '-' means '÷', '÷' means '×', and '×' means '+'

After interchanging the expression becomes:

= 117 ÷ 13 × 6 - 24 + 26

= 9 × 6 - 24 + 26

= 54 - 24 + 26

= 56 

The correct answer is Option 2 i.e. Friday

Total number of days

From May 6, 2022, to June 5, 2022: 31

From June 6, 2022, to July 5, 2022: 30

From July 6, 2022, to August 5, 2022: 31

From August 6, 2022, to September 5, 2022: 31

From September 6, 2022, to September 16, 2022: 10

Total number of odd days = 31 + 30 + 31 + 31 + 10 = 133

So, the number of odd days = 133 ÷ 7= 0 (The odd number of days is the remainder of the division)

It was Friday on September 16, 2022.

Hence, the correct answer is Friday.