Number Series Questions and Answers updated daily – Aptitude



347 Number Series Questions and answers section with explanation for various online exam preparation, various interviews, Aptitude Number Series online test. Number Series Questions with detailed description, explanation will help you to master the topic.

Number Series Questions

1. A professor wrote the below series in classroom. He wants his students to find the next number. Can you solve it for the professor?

299, 278, 257, 236, _____



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Correct Ans:215
Explanation:
The given series is -- 299, 278, 257, 236
Consecutive numbers decreases by 21
Following this pattern, the Missing Number should decrease by 21 from the previous number.
When we subtract 21 to the last number (i.e 236) we get 236--21=215


2. Below Numbers follow a particular pattern. Can you find the next number ?

299, 318, 337, 356, _____



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Correct Ans:375
Explanation:
The given series is -- 299, 318, 337, 356
Consecutive numbers increases by 19
Following this pattern, the Missing Number should increase by 19 from the previous number.
When we add 19 to the last number (i.e 356) we get 356+19=375


3. In the given series, can you find the next number ?

299, 280, 261, 242, _____



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Correct Ans:223
Explanation:
The given series is -- 299, 280, 261, 242
Consecutive numbers decreases by 19
Following this pattern, the Missing Number should decrease by 19 from the previous number.
When we subtract 19 to the last number (i.e 242) we get 242--19=223


4. Fifth number is missing in the below series. Can you find the fifth number in the below series ?

299, 316, 333, 350, _____



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Correct Ans:367
Explanation:
The given series is -- 299, 316, 333, 350
Consecutive numbers increases by 17
Following this pattern, the Missing Number should increase by 17 from the previous number.
When we add 17 to the last number (i.e 350) we get 350+17=367


5. Can you find the the next number in the below series

299, 284, 269, 254, _____



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Correct Ans:239
Explanation:
The given series is -- 299, 284, 269, 254
Consecutive numbers decreases by 15
Following this pattern, the Missing Number should decrease by 15 from the previous number.
When we subtract 15 to the last number (i.e 254) we get 254--15=239


6. Find the next number in the the below series

299, 312, 325, 338, _____



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Correct Ans:351
Explanation:
The given series is -- 299, 312, 325, 338
Consecutive numbers increases by 13
Following this pattern, the Missing Number should increase by 13 from the previous number.
When we add 13 to the last number (i.e 338) we get 338+13=351


7. What number should come next ?

255, 278, 301, 324, _____



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Correct Ans:347
Explanation:
The given series is -- 255, 278, 301, 324
Consecutive numbers increases by 23
Following this pattern, the Missing Number should increase by 23 from the previous number.
When we add 23 to the last number (i.e 324) we get 324+23=347


8. What should come in place of _____ in the below number series?

255, 231, 207, 183, _____



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Correct Ans:159
Explanation:
The given series is -- 255, 231, 207, 183
Consecutive numbers decreases by 24
Following this pattern, the Missing Number should decrease by 24 from the previous number.
When we subtract 24 to the last number (i.e 183) we get 183--24=159


9. In the below given sequence, what should be the next number ?

255, 277, 299, 321, _____



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Correct Ans:343
Explanation:
The given series is -- 255, 277, 299, 321
Consecutive numbers increases by 22
Following this pattern, the Missing Number should increase by 22 from the previous number.
When we add 22 to the last number (i.e 321) we get 321+22=343


10. Output of a particular program follows the below pattern. Can you find the next number ?

255, 233, 211, 189, _____



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Correct Ans:167
Explanation:
The given series is -- 255, 233, 211, 189
Consecutive numbers decreases by 22
Following this pattern, the Missing Number should decrease by 22 from the previous number.
When we subtract 22 to the last number (i.e 189) we get 189--22=167


11. A Computer program gave the following output. Can you predict the next number that the computer program would generate as output ?

255, 270, 285, 300, _____



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Correct Ans:315
Explanation:
The given series is -- 255, 270, 285, 300
Consecutive numbers increases by 15
Following this pattern, the Missing Number should increase by 15 from the previous number.
When we add 15 to the last number (i.e 300) we get 300+15=315


12. A professor wrote the below series in classroom. He wants his students to find the next number. Can you solve it for the professor?

255, 234, 213, 192, _____



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Correct Ans:171
Explanation:
The given series is -- 255, 234, 213, 192
Consecutive numbers decreases by 21
Following this pattern, the Missing Number should decrease by 21 from the previous number.
When we subtract 21 to the last number (i.e 192) we get 192--21=171


13. Below Numbers follow a particular pattern. Can you find the next number ?

255, 274, 293, 312, _____



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Correct Ans:331
Explanation:
The given series is -- 255, 274, 293, 312
Consecutive numbers increases by 19
Following this pattern, the Missing Number should increase by 19 from the previous number.
When we add 19 to the last number (i.e 312) we get 312+19=331


14. In the given series, can you find the next number ?

255, 236, 217, 198, _____



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Correct Ans:179
Explanation:
The given series is -- 255, 236, 217, 198
Consecutive numbers decreases by 19
Following this pattern, the Missing Number should decrease by 19 from the previous number.
When we subtract 19 to the last number (i.e 198) we get 198--19=179


15. Fifth number is missing in the below series. Can you find the fifth number in the below series ?

255, 272, 289, 306, _____



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Correct Ans:323
Explanation:
The given series is -- 255, 272, 289, 306
Consecutive numbers increases by 17
Following this pattern, the Missing Number should increase by 17 from the previous number.
When we add 17 to the last number (i.e 306) we get 306+17=323


16. Can you find the the next number in the below series

255, 240, 225, 210, _____



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Correct Ans:195
Explanation:
The given series is -- 255, 240, 225, 210
Consecutive numbers decreases by 15
Following this pattern, the Missing Number should decrease by 15 from the previous number.
When we subtract 15 to the last number (i.e 210) we get 210--15=195


17. Find the next number in the the below series

255, 268, 281, 294, _____



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Correct Ans:307
Explanation:
The given series is -- 255, 268, 281, 294
Consecutive numbers increases by 13
Following this pattern, the Missing Number should increase by 13 from the previous number.
When we add 13 to the last number (i.e 294) we get 294+13=307


18. What number should come next ?

199, 222, 245, 268, _____



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Correct Ans:291
Explanation:
The given series is -- 199, 222, 245, 268
Consecutive numbers increases by 23
Following this pattern, the Missing Number should increase by 23 from the previous number.
When we add 23 to the last number (i.e 268) we get 268+23=291


19. What should come in place of _____ in the below number series?

199, 175, 151, 127, _____



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Correct Ans:103
Explanation:
The given series is -- 199, 175, 151, 127
Consecutive numbers decreases by 24
Following this pattern, the Missing Number should decrease by 24 from the previous number.
When we subtract 24 to the last number (i.e 127) we get 127--24=103


20. In the below given sequence, what should be the next number ?

199, 221, 243, 265, _____



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Correct Ans:287
Explanation:
The given series is -- 199, 221, 243, 265
Consecutive numbers increases by 22
Following this pattern, the Missing Number should increase by 22 from the previous number.
When we add 22 to the last number (i.e 265) we get 265+22=287





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