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Assertion: If log_10 a = x then 10^x+2 = 100a. Reason: 10^x+2 = 10^x × 10^2 = 100 × 10^x. - Mathematics

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प्रश्न

Assertion: If log10 a = x then 10x+2 = 100a.

Reason: 10x+2 = 10x × 102 = 100 × 10x.

विकल्प

  • Both A and R are true and R is the correct reason for A.

  • Both A and R are true but R is the incorrect reason for A.

  • A is true but R is false.

  • A is false but R is true.

MCQ
अभिकथन और तर्क
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उत्तर

Both A and R are true and R is the correct reason for A.

Explanation:

Given log10 a = x, by definition, a = 10x.

Therefore, 10x+2

= 10x × 102

= 10x × 100

= 100 × 10x

= 100a

Hence, both A and R are true and R correctly explains A.

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अध्याय 7: Logarithms - MULTIPLE CHOICE QUESTIONS [पृष्ठ ७६]

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बी निर्मला शास्त्री Mathematics [English] Class 9 ICSE
अध्याय 7 Logarithms
MULTIPLE CHOICE QUESTIONS | Q 14. | पृष्ठ ७६
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