Number Series problems
- 1. Find the wrong number in the following series? 1500, 1475, 1448, 1419, 1389, 1355, 1320
Options- A. 1475
- B. 1419
- C. 1389
- D. 1355 Discuss
Correct Answer: 1389
Explanation:
Take a look at the below sereies :
1500 - 25 = 1475
1475 - 27 = 1448
1448 - 29 = 1419
1419 - 31 = 1388
1388 - 33 = 1355
1355 - 35 = 1320
It clearly shows 1389 is Wrong Number
- 2. What is the number that should come in the place of question mark ? 1050 420 168 67.2 ?
Options- A. 19.11
- B. 14.25
- C. 10.752
- D. 26.88 Also asked in: AIEEE, Bank Exams, CAT, GATE, GRE, Analyst, Bank Clerk, Bank PO
Correct Answer: 26.88
Explanation:
Given series follows the rule of
1050/2.5 = 420
420/2.5 = 168
168/2.5 = 67.2
so 67.2/2.5 = 26.88
- 3. Find the next number in the series 404, 415, 402, 413, 400, ?
Options- A. 411
- B. 421
- C. 417
- D. 414 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO, Database Administrator, IT Trainer
Correct Answer: 411
Explanation:
The given series 404, 415, 402, 413, 400, ? follows a pattern that,
404
404 + 11 = 415
415 - 13 = 402
402 + 11 = 413
413 - 13 = 400
400 + 11 = 411
Hence the next number in the given number series is 411.
- 4. Find the next number in the given number sequence? 4, 15, 37, 81, ?
Options- A. 196
- B. 169
- C. 144
- D. 121 Also asked in: AIEEE, Bank Exams, CAT, GATE, GRE, Analyst, Bank Clerk, Bank PO, Database Administrator, IT Trainer
Correct Answer: 169
Explanation:
The given number series follows a pattern that, 4, 15, 37, 81, ?
4
4 + 11 = 15
15 + 22 = 37
37 + 44 = 81
81 + 88 = 169
Hence, the next number in the sequence is 169.
- 5. Find the next number in the given number series 1, 3, 10, 41, 206, ?
Options- A. 1237
- B. 897
- C. 987
- D. 1007 Also asked in: AIEEE, Bank Exams, CAT, GATE, GRE, Analyst, Bank Clerk, Bank PO
Correct Answer: 1237
Explanation:
The given number series is 1, 3, 10, 41, 206, ?
It follows a pattern that,
1
1 x 2 + 1 = 3
3 x 3 + 1 = 10
10 x 4 + 1 = 41
41 x 5 + 1 = 206
206 x 6 + 1 = 1237
Hence, the next number in the given number series is 1237.
- 6. What would be the next number in the sequence 52, 56, 48, 64, 32, ?
Options- A. 96
- B. 48
- C. 54
- D. 81 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 96
Explanation:
The given number series is 52, 56, 48, 64, 32, ?
It follows a pattern that,
52
52 + 4 = 56
56 - 8 = 48
48 + 16 = 64
64 - 32 = 32
32 + 64 = 96
Therefore, the required next number in the given number series is 96.
- 7. Choose the correct alternative that will continue the same pattern and replace 'x' in series 1.5,1.55,1.65,1.8,x
Options- A. 1.95
- B. 2.0
- C. 1.85
- D. 2.05 Discuss
Correct Answer: 2.0
Explanation:
The pattern is +0.05,+0.1,+0.15, . . . .
so missing term =1.8+0.20=2.0
- 8. Choose the correct alternative that will continue the same pattern and replace 'x' in series 1,2,5,10,25,50,x,250
Options- A. 75
- B. 150
- C. 125
- D. 100 Discuss
Correct Answer: 125
Explanation:
The pattern is *2,*5/2,*2,*5/2,*2, . . . . .
So missing term is 50*(5/2)=125
- 9. Which Number would come in place of the underline mark in the series. 3, 9, 21, ___ , 93
Options- A. 39
- B. 45
- C. 48
- D. 51 Discuss
Correct Answer: 45
Explanation:
First difference is 6 and second is 12. But if we take third as 18, then fourth difference will be 24. Then 93 can not be the last term.
So we have to take the difference as 6, 12, 24 and 48.
So Answer is 21+24 = 45
- 10. bc _ b _ c _ b _ ccb
Options- A. c b c b
- B. b b c b
- C. c b b c
- D. b c b c Discuss
Correct Answer: c b c b
Explanation:
Here 'bccb' repeated 3 times.
b c c b | b c c b | b c c b
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