1.

1). 272). 33). 0.114). 0.3

Answer»

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 FIRST, and 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.

Given expression is,

⇒ (3.4 × 0.5) + (9 × 0.7) = (?)2 - 1

⇒ (1.7) + (6.3) = (?)2 – 1

⇒ 8 = (?)2 – 1

⇒ (?)2 = 8 + 1 = 9

⇒ (?)2 = (3)2

⇒ ? = 3



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