# Mathematical Reasoning Practice Set

 1. If ‘+’ means ‘–’ ‘–’ means ‘×’ ‘÷’ means ‘+’ and ‘×’ means ‘÷’, then 10 × 5 ÷ 3 – 2 + 3 = ? A. 5 B. 21 C. 53⁄3 D. 18 Answer: Option A Explanation: 10 × 5 ÷ 3 – 2 + 3 = ? or, ? = 10 ÷ 5 + 3 × 2 – 3 or, ? = 2 + 6 – 3 = 5 View / Hide Answer

 2. If ‘+’ means ‘÷’, ‘–’ means ‘×’, ‘÷’ means ‘+’ and ‘×’ means ‘–’, then 63 × 24 + 8 ÷ 4 + 2 – 3 = ? A. 54 B. 66 C. 186 D. 48 Answer: Option B Explanation:63 × 24 + 8 ÷ 4 + 2 – 3 = ? or, ? = 63 – 24 ÷ 8 + 4 ÷ 2 × 3 or, ? = 63 – 3 + 2 × 3 or, ? = 66 View / Hide Answer

 3. Which one of the following is correct? — निम्नलिखित में से कौन सा सही है? 6 * 4 * 9 * 15 A. ×, = , – B. ×, –, = C. =, ×, – D. –, ×, = Answer: Option B Explanation: 6 × 4 – 9 = 15 View / Hide Answer

 4. If > = ÷, ∨ = ×, < = +, ∨ = –, + = <, × = =, – = > A. 6 > 2 > 3 ∨ 8 ∨ 4 + 13 B. 6 ∨ 2 < 3 > 8 < 4 – 13 C. 6 ∨ 2 < 3 ∨ 8 > 4 × 13 D. 6 > 2 ∨ 3 < 8 ∨ 4 + 13 Answer: Option C Explanation:6 × 2 + 3 – 8 ÷ 4 = 13 6 × 2 + 3 – 2 = 13 12 + 3 – 2 = 13 15 – 2 = 13 View / Hide Answer

 5. Find out the correct answer for the unsolved equation on the basis of the given equations — दिए गए समीकरणों के आधार पर अनसुलझी समीकरण के लिए सही उत्तर का पता लगाएं If 6 * 5 = 91, 8 * 7 = 169, 10 * 7 = 211, then 11 * 10 = ? A. 331 B. 993 C. 678 D. 845 Answer: Option A Explanation:6 × 5 = 30, 30 × 3 + 1 = 91, 8 × 7 = 56, 56 × 3 + 1 = 169, 10 × 7 = 70, 70 × 3 + 1 = 211 Similarly 11 × 10 = 110, 110 × 3 + 1 = 331 View / Hide Answer

 6. If ‘–’ stands for division, ‘+’ for multiplication ‘÷’for subtraction and ‘×’ for addition. Which one of the following equation is correct? A. 6 ÷ 20 × 12 + 7 ÷ 1 = 70 B. 6 + 20 – 20 ÷ 7 × 1 = 62 C. 6 – 20 ÷ 12 × 7 + 1 = 57 D. 6 + 20 – 20 ÷ 7 – 1 = 38 Answer: Option A Explanation:6 ÷ 20 × 12 + 7 – 1 = 70 L.H.S. = 6 – 20 + 12 × 7 ÷ 1 = 6 – 20 + 84 = 90 – 20 = 70 R. H.S. View / Hide Answer