Discussion
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- Question
- 6674 x 625 =?
Options- A. 4170160
- B. 4072360
- C. 4171050
- D. 4171250
- Correct Answer
- 4171250
Explanation6674 x 625 = 6674 x (5)4
= 6674 x (104/24
= 66740000/16 = 4171250 - 1. 9856 x 156 + 9856 x 844 =?
Options- A. 9856000
- B. 9836500
- C. 9794560
- D. 9698350 Discuss
- 2. Which of the following number always divides the difference between the square of two consecutive odd numbers?
Options- A. 7
- B. 3
- C. 8
- D. 6 Discuss
- 3. The sum of 5 consecutive numbers is equal to 170. what is the product of largest and smallest numbers?
Options- A. 1512
- B. 1102
- C. 1152
- D. 1210 Discuss
- 4. The sum of 5 consecutive even numbers A, B, C, D and E is 130. What is the product of A and E?
Options- A. 720
- B. 616
- C. 660
- D. 672 Discuss
- 5. How many rational numbers are there between 1 and 1000?
Options- A. 998
- B. 999
- C. 1000
- D. infinite Discuss
- 6. 9998 x 999 =?
Options- A. 9997001
- B. 9988002
- C. 9987012
- D. 9898012 Discuss
- 7. 8888 + 7777 + 666 +? = 19000
Options- A. 2719
- B. 2679
- C. 1669
- D. None of these Discuss
- 8. 4003 -? - 1599 = 716
Options- A. 1598
- B. 1688
- C. 3120
- D. None of these Discuss
- 9. 36000 - 888 = 37000 -?
Options- A. 2018
- B. 1848
- C. 1888
- D. 1978 Discuss
- 10. 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
Number System problems
Search Results
Correct Answer: 9856000
Explanation:
9856 x 156 + 9856 x 844 = 9856 x (156 + 844)
= 9856 x 1000
= 9856000
Correct Answer: 8
Explanation:
Let the two consecutive odd numbers be 2x+1 and 2x + 3 .
? Difference = ( 2x + 3 )2 - ( 2x + 1 )2
= ( 2x + 3 + 2x + 1 )( 2x + 3 - 2x - 1 )
=( 4x + 4 ) x 2
= 8 (x + 1)
whis is exactly divisible by 8.
Correct Answer: 1152
Explanation:
Let smallest number = x.
Then, x + x + 1 + x + 2 + x + 3 + x + 4 = 170
? 5x + 10 = 170
? x = 160 / 5
? x = 32
? product of smallest and largest number = 32 x 36
= 1152
Correct Answer: 660
Explanation:
Let 5 consecutive even number be A = x, B = x+2, C = x+4, D = x + 6 and E = x + 8.
According to question
x + x +2 + x + 4 + x + 6 + x + 8 = 130
? 5x + 20 = 130
? x = 22
? A = 22, E = 22 + 8 = 30.
? Multiplication of A and E = 22 x 30
= 660
Correct Answer: infinite
Explanation:
There can be infinite number of rational numbers between 1 and 1000.
Correct Answer: 9988002
Explanation:
Exp.= 9998 x 999
= 9998 x (1000-1)
= 9998 x 1000 - 9998 x 1
= 9998000 - 9998 = 9988002
Correct Answer: 1669
Explanation:
Let, 8888 +7777 + 666 + x = 19000
Then, 17331 + x = 19000
? x = 19000 - 17331 = 1669
Correct Answer: 1688
Explanation:
Let, 4003 - x - 1599 = 716
Then, x = 4003 - 1599 - 716
= 4003 - (1599 + 716)
= 4003 - 2315
= 1688
Correct Answer: 1888
Explanation:
Let 37000 - x = 36000 - 888
Then x = 37000 - 36000 + 888
= 1888
Correct Answer: 2512
Explanation:
Let x - 1046 - 398 - 69 = 999
Then x = 999 + 1046 + 398 + 69
= 2512.
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