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Question
Complete the following sequence.
100, 400, 700, ______, _______, ________.
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Solution
100, 400, 700, 1000, 1300, 1600.
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90, 180, 270, _______, ________, ________.
A9, B18, C27, D36, _______, ________, _________.
Complete the following sequence.
| A100 | C300 | E500 |
Complete the following sequence.
| 200 | 400 | 600 |
Look at the calendar below.
Let us mark 3 × 3 boxes (9 dates) on the calendar and see some magic.
| Take the smallest number | 3 |
| Add 8 to it | +8 |
| = | 11 |
| Multiply it by 9 | ×9 |
| Total | 99 |
Now you choose any 3 × 3 boxes from a calendar and find the total in the same way.
