Question 33Asked in CTET December 2024 Paper 2 Maths & Science, 15 Dec 2024

If A and B represent digits and A B Aयदि A और B अंकों को निरूपित करते हैं तथा

If A and B represent digits and A B A × 5 4 4 B 0 then which of the following is true?
यदि A और B अंकों को निरूपित करते हैं तथा A B A × 5 4 4 B 0 है, तो निम्न में से कौन-सा सत्य है?
  1. AA = 4, B = 2A = 4, B = 2
  2. BA = 9, B = 8A = 9, B = 8
  3. CA = 2, B = 4A = 2, B = 4
  4. DA = 8, B = 9A = 8, B = 9
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Correct answer: (D) A = 8, B = 9A = 8, B = 9

Explanation

Since ABA × 5 is a 4-digit number starting with 44, ABA is about 880-899, so A = 8. Then 8B8 × 5 = 44B0 gives B = 9: 898 × 5 = 4490.चूँकि ABA × 5 एक चार अंकों की संख्या है जो 44 से शुरू होती है, इसलिए ABA लगभग 880-899 के बीच है, अतः A = 8। तब 8B8 × 5 = 44B0 से B = 9 आता है: 898 × 5 = 4490।

From CTET December 2024 Paper 2 Maths & Science, 15 Dec 2024 — Previous Year Paper

This is question 33 of CTET December 2024 Paper 2 Maths & Science, 15 Dec 2024 — 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.