Number Series problems
- 1. Choose the correct alternative that will continue the same pattern and replace 'x' in series 4,9,25,x,121,169,289,361
Options- A. 81
- B. 36
- C. 64
- D. 49 Discuss
Correct Answer: 49
Explanation:
The given series consists of squares of consecutive prime numbers
2*2, 3*3, 5*5, . . . . , 11*11, 13*13, 17*17
- 2. Choose the correct alternative that will continue the same pattern and replace the 'x' in the series 525, 430, 345, 270, x
Options- A. 255
- B. 205
- C. 235
- D. 175 Discuss
Correct Answer: 205
Explanation:
The pattern is -95, -85, -75, -65, . . . .
- 3. Choose the missing terms out of the given alternatives T, R, P, N, L, ?, ?
Options- A. K,I
- B. J, H
- C. J, G
- D. K, H Discuss
Correct Answer: J, H
Explanation:
T - 2 = R
R - 2 = P
P - 2 = N
N - 2 = L
L - 2 = J
J - 2 = H
- 4. Choose the missing terms out of the given alternatives ejo, tyd, ins, xch, ?
Options- A. mrw
- B. nrw
- C. nsx
- D. nsw Discuss
Correct Answer: mrw
Explanation:
There is a gap of 4 letters between the first and second, second and third letters of each term, and also between the last letter of the term and first letter of next term
- 5. In the following question a letter-series is given, in which some letters are missing. The missing letters are given in the proper sequence as one of the alternatives. Choose the correct alternatives. ba_ba_bac_acb_cbac
Options- A. bbca
- B. ccba
- C. cbac
- D. aacb Discuss
Correct Answer: ccba
Explanation:
The series is bac/bac/bac/bac/bac/bac.
The pattern bac is repeated.
- 6. Find the missing number in the following series? 2, 3, 10, 39, ?, 885
Options- A. 128
- B. 156
- C. 172
- D. 189 Discuss
Correct Answer: 172
Explanation:
Take a Look at the below sereies
- 7. Find out the wrong term in the series 1, 5, 9, 15, 25, 37, 49
Options- A. 15
- B. 49
- C. 25
- D. 37 Discuss
Correct Answer: 15
Explanation:
The terms of the given series is 1*1, 2*2 + 1, 3*3, 4*4 +1, 5*5, 6*6 + 1, . . . . .
So, 15 is wrong and must be replaced by (4*4 + 1) = 17
- 8. What will come in the place of the (?) in the following number series ? 5 14 45 130 (?) 1182
Options- A. 222
- B. 397
- C. 404
- D. 415 Also asked in: AIEEE, Bank Exams, CAT, GATE, Bank Clerk, Bank PO
Correct Answer: 397
Explanation:
The pattern of given series is :
5
14 = (5x3) - 1
45 = (14x3) + 3
130 = (45x3) - 5
(?) = (130x3) + 7
=> (?) = 397
1182 = (397x3) - 9
Thus, the missing number is 397.
- 9. Find the next number in the series given 18, 90, 450, 2250, ?
Options- A. 4520
- B. 6520
- C. 7250
- D. 11250 Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: 11250
Explanation:
The given number series is 18, 90, 450, 2250, ?
18
18 x 5 = 90
90 x 5 = 450
450 x 5 = 2250
2250 x 5 = 11250
Hence, the next number in the given series is 11250.
- 10. 3, 6, 17.5, 64.75, ?
Options- A. 304.587
- B. 295.875
- C. 115.246
- D. 101 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 295.875
Explanation:
3
3 x 1.5 + 1.5 = 6
6 x 2.5 + 2.5 = 17.5
17.5 x 3.5 + 3.5 = 64.75
64.75 x 4.5 + 4.5 = 295.875
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