Civil Service Exam Reviewer · Logical Reasoning · medium
In each row, the third number is obtained from the first two by the same rule. Find the missing number. Row 1: 6, 5, 1 Row 2: 9, 8, 1 Row 3: 6, 3, ?
- 45
- 27
- 81
- 9
Answer
D. 9
Solution
Third number = (a − b)² (with a = first number, b = second number). Row 1: 6, 5 → 1; Row 2: 9, 8 → 1. Row 3: 6, 3 → 9.
More Logical Reasoning questions
- In each row, the third number is obtained from the first two by the same rule. Find the missing number. Row 1: 12, 3, 180 Row 2: 8, 5, 104…
- In each row, the third number is obtained from the first two by the same rule. Find the missing number. Row 1: 11, 4, 117 Row 2: 12, 4…
- In each row, the third number is obtained from the first two by the same rule. Find the missing number. Row 1: 7, 6, 43 Row 2: 9, 6, 57…
- If 8 ★ 3 = 1124, 9 ★ 4 = 1336, then 7 ★ 3 = ?
- If 8 ★ 6 = 1448, 8 ★ 2 = 1016, then 9 ★ 5 = ?
- If 8 ★ 3 = 115, 3 ★ 2 = 51, then 5 ★ 4 = ?
- If 7 ★ 4 = 328, 7 ★ 5 = 235, then 5 ★ 3 = ?
- If 4 ★ 3 = 127, 9 ★ 2 = 1811, then 7 ★ 4 = ?
- If 8 ★ 2 = 1610, 6 ★ 4 = 2410, then 7 ★ 4 = ?
- If 8 ★ 2 = 616, 9 ★ 3 = 627, then 9 ★ 7 = ?