Number System problems
- 1. 8888 + 7777 + 666 +? = 19000
Options- A. 2719
- B. 2679
- C. 1669
- D. None of these Discuss
Correct Answer: 1669
Explanation:
Let, 8888 +7777 + 666 + x = 19000
Then, 17331 + x = 19000
? x = 19000 - 17331 = 1669
- 2. 4003 -? - 1599 = 716
Options- A. 1598
- B. 1688
- C. 3120
- D. None of these Discuss
Correct Answer: 1688
Explanation:
Let, 4003 - x - 1599 = 716
Then, x = 4003 - 1599 - 716
= 4003 - (1599 + 716)
= 4003 - 2315
= 1688
- 3. 36000 - 888 = 37000 -?
Options- A. 2018
- B. 1848
- C. 1888
- D. 1978 Discuss
Correct Answer: 1888
Explanation:
Let 37000 - x = 36000 - 888
Then x = 37000 - 36000 + 888
= 1888
- 4. What value should come in place of the question mark(?) in the following question?
? +1046 -398 - 69 = 999
Options- A. 2502
- B. 2512
- C. 2472
- D. 514 Discuss
Correct Answer: 2512
Explanation:
Let x - 1046 - 398 - 69 = 999
Then x = 999 + 1046 + 398 + 69
= 2512.
- 5. What value should come in place of the question mark(?) in the following question?
? + 6207 - 9038 = 107
Options- A. 2724
- B. 2938
- C. 2814
- D. None of these Discuss
Correct Answer: 2938
Explanation:
Let x + 6207 - 9038 = 107
Then x = (107 +9038) - (6207)
= 2938
- 6. 3571 +? - 6086 = 155
Options- A. 2400
- B. 2630
- C. 2515
- D. None of these Discuss
Correct Answer: 2630
Explanation:
Let 3571 + x - 6086 = 115
Then, x = 6086 +115 -3571
= 6201-3571
= 2630
- 7. 36800 - 9999 - 3333 - 66 =?
Options- A. 30200
- B. 27912
- C. 23402
- D. 24102 Discuss
Correct Answer: 23402
Explanation:
36800 - 9999 - 3333 - 66 = 36800 - ( 9999 - 3333 - 66)
= 36800 - 13398
= 23402
- 8. What value should come in place of the question mark(?) in the following question?
? - 4799 = 1714
Options- A. 6513
- B. 7403
- C. 3085
- D. None of these Discuss
Correct Answer: 6513
Explanation:
Let x - 4799 = 1714
Then, x = 4799 + 1714
= 6513.
- 9. What value should come in place of the question mark(?) in the following question?
9501 -? = 3697
Options- A. 13198
- B. 5814
- C. 5804
- D. 4894 Discuss
Correct Answer: 5804
Explanation:
Let 9501 - x = 3697
Then x = 9501 - 3697
= 5804
- 10. What value should come in place of the question mark(?) in the following question?
66066 + 6606 + 66 + 6 =?
Options- A. 258126
- B. 72744
- C. 72798
- D. None of these Discuss
Correct Answer: 72744
Explanation:
66066 + 6606 + 66 + 6 = 72744
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