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Select the number from among the given options that can replace the question mark (?) in the following series.
189, 532, 316, ?, 377
384
291
441
405
Let’s break this sequence down:
- The series is: 189, 532, 316, ?, 377.
Let’s look for a pattern. Try alternating patterns—maybe subtraction and addition.
First, check differences:
- 532 - 189 = 343
- 316 - 532 = -216
- ? - 316 = x
- 377 - ? = y
See those numbers: 343 = 7³, 216 = 6³.
Looks like the pattern is:
- Add 343, subtract 216, add 125, subtract 64, ...
- Cubes in descending order? 7³, 6³, 5³, 4³...
So,
- Step 1: 189 + 343 = 532 (? 7³)
- Step 2: 532 - 216 = 316 (? 6³)
- Step 3: 316 + 125 = 441 (? 5³)
- Step 4: 441 - 64 = 377 (? 4³)
Therefore:
- The missing number is 441.
- Option 3 is correct.
- 441 fits the pattern—addition of cubes in order (alternating add/subtract).
By: Parvesh Mehta ProfileResourcesReport error
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