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Question 79Asked in BPSC TRE 2.0 (2023) Mathematics and Science Class 6-8

If (2^(3x−1) + 10) ÷ 7 = 6, then what is the value of x?यदि (2^(3x−1) + 10) ÷ 7 = 6 हो, तो x का मान क्या है?

यदि (2^(3x−1) + 10) ÷ 7 = 6 हो, तो x का मान क्या है?
  1. A–2–2
  2. B11
  3. C22
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
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Correct answer: (C) 22

Explanation

(2^(3x-1) + 10)/7 = 6 gives 2^(3x-1) = 32 = 2⁵, so 3x - 1 = 5 and x = 2.(2^(3x-1) + 10)/7 = 6 से 2^(3x-1) = 32 = 2⁵, अतः 3x - 1 = 5 और x = 2।

From BPSC TRE 2.0 (2023) Mathematics and Science Class 6-8 — Previous Year Paper

This is question 79 of BPSC TRE 2.0 (2023) Mathematics and Science Class 6-8 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.