Concept used:

Follow the BODMAS rule to solve this question, as per the order given below,

Calculation:

54% of 1750 + 38% of 2700 = ? + 830

⇒ 945 + 1026 - 830 = ?

⇒ ? = 1141

∴ The answer is 1141

Concept used:

Follow BODMAS rule to solve this question, as per the order given below.

Step - 1: Parts of an equation enclosed in 'Brackets' must be solved second, and following BODMAS rule in the bracket

Step - 2: Any mathematical 'Of' or 'Exponent' must be solved next.

Step - 3: Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated.

Step - 4: Last but not least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated.

Calculations:

[{199 + (14 × 3)} × 9²] + (21)² + 281 - ? = (140)²

⇒ [{199 + 42} × 81] + 441 + 281 - ? = 19600

⇒ [241 × 81] + 441 + 281 - ? = 19600

⇒ 19521 + 441 + 281 - ? = 19600

⇒ 20243 - ? = 19600

⇒ 20243 - 19600 = ?

⇒ ? = 643

Hence, the correct answer is 643.

Concept used:

Follow the BODMAS rule to solve this question, as per the question is given below:

Step 1: Parts of an equation enclosed in ' Brackets ' must be solved first and in the bracket,

Step 2: Any mathematical ' of ' or 'exponent' must be solved next,

Step 3: Next, The part of the equation that contains 'Division' and 'multiplication' are calculated,

Step 4: Last but not least, the parts of the equation that contains 'Addition ' and 'Subtraction' should be calculated

Given:

⇒ 29 × 2 + (222 ÷ 3) ÷ 37 + 2² = ?²

⇒ 58 + 74 ÷ 37 + 4 = ?²

⇒ 58 + 2 + 4 = ?²

⇒ 64 = ?²

⇒ (8)^2×1/2 = (?)^2×1/2

⇒ ? = 8

Hence, 8 is the correct answer.

Given:

Concept Used:

(a + b)(a - b) = a² - b²

Calculation:

We use the BODMAS rule as follows:

According to the rule ‘Of’ should be solved first

⇒ 14.28% of 343 = 7^?

⇒ (1/7) × 343 = 7^?

⇒ 49 = 7^?

⇒ 7² = 7^?

⇒ ? = 2

∴ The value of ? is 2.

Given:

(1/10) of (12.5 + 7.5) - 5 = ? - 10

Concept:

Follow the BODMAS rule according to the table given below:

Calculation:

(1/10) of (12.5 + 7.5) - 5 = ? - 10

⇒ (1/10) × 20 - 5 = ? - 10

⇒ 2 - 5 = ? - 10

⇒ ? = 10 - 3

⇒ ? = 7

∴ 7 will come in place of the question mark ('?').

Calculation:

(0.0625)3 × 0.125/(0.5)8 = (0.5)?/0.25

⇒ {(0.5)⁴}³ × (0.5)³/(0.5)⁸ = (0.5)^?/(0.5)²

⇒ (0.5)¹² × (0.5)^{3 - 8} = (0.5)^{? - 2}

On comparing the powers of 0.5, we get:

⇒ 12 - 5 = ? - 2

⇒ 7 + 2 = ?

⇒ ? = 9

∴ 9 will come in place of the question mark.

Given:

Concept Used:

Calculation:

Concept used:

Calculation:

105 + 250 – 4 × 50 + 0.7 × 20 = ?²

⇒ 105 + 250 – 4 × 50 + 0.7 × 20 = ?²

⇒ 105 + 250 – 200 + 14 = ?²

⇒ 169  = ?²

⇒ ±13 = ?

⇒ 13 = ? (only positive option given)

∴ The value of '?' is 13.

Concept Used:

Using BODMAS Rule,

Calculation:

⇒ 9.18 × 3.6/7.2 + 10.8 of (1/18) – 1/10 = ?

⇒ 9.18 × ½ + 0.6 – 0.1 =? 

⇒ 4.59 + 0.6 – 0.1 =?

⇒ ? = 5.09 ≈ 5

Given:

62.5 × 16 + 1000 – (27)² + (31)² = ?

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

62.5 × 16 + 1000 – (27)² + (31)² = ?

⇒ 1000 + 1000 – 729 + 961 = ?

⇒ 2000 + 961 – 729 = ?

⇒ 2961 – 729 = ?

⇒ 2232 = ?

∴ The value of ? is 2232.