Question 47Asked in CTET February 2026 Paper 2 Maths & Science, 1 Mar 2026

If 12500 = 5^x × 2^y, then which of the following can be expressed in the form 5^(x–1) × 2^(2y) ?यदि 12500 = 5^x × 2^y है, तो निम्नलिखित में से किसको 5^(x–1) × 2^(2y) के रूप में व्यक्त किया जा सकता है ?

यदि 12500 = 5^x × 2^y है, तो निम्नलिखित में से किसको 5^(x–1) × 2^(2y) के रूप में व्यक्त किया जा सकता है ?
  1. A500500
  2. B1000010000
  3. C25002500
  4. D6250062500
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Correct answer: (B) 1000010000

Explanation

12500 = 5⁵ × 2², so x = 5 and y = 2. Then 5^(x-1) × 2^(2y) = 5⁴ × 2⁴ = 625 × 16 = 10000.12500 = 5⁵ × 2², इसलिए x = 5 और y = 2। तब 5^(x-1) × 2^(2y) = 5⁴ × 2⁴ = 625 × 16 = 10000।

From CTET February 2026 Paper 2 Maths & Science, 1 Mar 2026 — Previous Year Paper

This is question 47 of CTET February 2026 Paper 2 Maths & Science, 1 Mar 2026 — 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.