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Question
If 1 × 7 = 8, 2 × 7 = 16, 3 × 7 = 24, 4 × 7 = 32, then what is value of 9 × 7?
Options
63
72
81
90
Solution
72
Explanation:
1 × 7 = (1 + 7) × 1 = 8
2 × 7 = 2 × (7 + 1) = 16
3 × 7 = 3 × (7 + 1) = 24
4 × 7 = 4 × (7 + 1) = 32
Similarly,
9 × 7 = 9 × (7 + 1) = 72
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Instructions for Question:
The following question has a main statement followed by four statements: 1, 2, 3, 4. Choose the ordered pair of statements where the first statement implies the second, and the two statements are logically consistent with the main statement.
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Recently, the answers to a test held nationwide were leaked to a group of unscrupulous people. The investigative agency has arrested the mastermind and nine other people A, B, C, D, E, F, G, Hand I in this matter. interrogating them, the following facts have been obtained regarding their operation. Initially, the mastermind obtains the correct answer-key. AU the others create their answer-key from one or two people who already possess the same. These people are called his/her "'sources". If the person has two sources. then he/she compares the answer-keys obtained for both sources. If the key to a question from both sources is identical, it is copied, otherwise, it is left blank. If the person has only one source, he/she copies the source's answer into his/her copy. Finally, each person compulsorily replaces one of the answers (not a blank one) with a wrong answer in his/her answer key.
The paper contained 200 questions; so the investigative agency has ruled out the possibility of two or more of them introducing wrong answers to the same question. The investigative agency has a copy of the correct answer key and has tabulated the following data. This data represents question numbers.
| Name | Wrong Answer(s) | Blank Answer(s) |
| A | 45 | ___ |
| B | 96 | 46, 90, 25 |
| C | 27, 56 | 17, 46, 90 |
| D | 17 | ____ |
| E | 46, 90 | ____ |
| F | 14, 46 | 92, 90 |
| G | 25 | ____ |
| H | 46, 92 | ____ |
| I | 27 | 17, 26, 90 |
Which of the following statements is true?
Recently, the answers to a test held nationwide were leaked to a group of unscrupulous people. The investigative agency has arrested the mastermind and nine other people A, B, C, D, E, F, G, Hand I in this matter. interrogating them, the following facts have been obtained regarding their operation. Initially, the mastermind obtains the correct answer-key. AU the others create their answer-key from one or two people who already possess the same. These people are called his/her "'sources". If the person has two sources. then he/she compares the answer-keys obtained for both sources. If the key to a question from both sources is identical, it is copied, otherwise, it is left blank. If the person has only one source, he/she copies the source's answer into his/her copy. Finally, each person compulsorily replaces one of the answers (not a blank one) with a wrong answer in his/her answer key.
The paper contained 200 questions; so the investigative agency has ruled out the possibility of two or more of them introducing wrong answers to the same question. The investigative agency has a copy of the correct answer key and has tabulated the following data. This data represents question numbers.
| Name | Wrong Answer(s) | Blank Answer(s) |
| A | 45 | ___ |
| B | 96 | 46, 90, 25 |
| C | 27, 56 | 17, 46, 90 |
| D | 17 | ____ |
| E | 46, 90 | ____ |
| F | 14, 46 | 92, 90 |
| G | 25 | ____ |
| H | 46, 92 | ____ |
| I | 27 | 17, 26, 90 |
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