Question
Download Solution PDFWhat approximate will come in the place of the question mark ‘?’ in the following question?
√255.7 ÷ 4.21 + 3.12 - ? × 5.01 = 2
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFRules of Approximation:
1. If a number have digits to the right of the decimal less than 5. Then just drop the digits to the right of the decimals. The number so obtained will be the approximated value.
2. If a number have digits to the right of the decimal more than 5. Then just drop the digits to the right of the decimals and raise the remaining number by '1'.The number so obtained will be the approximated value.
Concept:
Follow BODMAS rule to solve this question, as per the order given below,
Since, we need to find out the approximate value, we can write these values to their nearest integers. Given expression is
√256 ÷ 4 + 3 - ? × 5 = 2
⇒ 16 ÷ 4 + 3 - ? × 5 = 2
⇒ 4 + 3 - ? × 5 = 2
⇒ 7 - ? × 5 = 2
⇒ ? × 5 = 5
⇒ ? = 1
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