Numbers-Data Intensity 4 Multiple Questions and Answers.
Exercise Questions ::
Numbers
| Answer: Option A |
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| Explanation: |
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80 = 2 x 5 x 8
Since 653xy is divisible by 2 and 5 both, so y = 0.
Now, 653x is divisible by 8, so 13x should be divisible by 8.
This happens when x = 6.
x + y = (6 + 0) = 6. |
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Published by:Michael Daani
| Answer: Option D |
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Let the two consecutive odd integers be (2n + 1) and (2n + 3). Then,
(2n + 3)2 - (2n + 1)2 = (2n + 3 + 2n + 1) (2n + 3 - 2n - 1)
= (4n + 4) x 2
= 8(n + 1), which is divisible by 8. |
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Published by:Michael Daani
| Answer: Option D |
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| Explanation: |
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Unit digit in (4137)754 = Unit digit in {[(4137)4]188 x (4137)2}
=Unit digit in { 292915317923361 x 17114769 }
= (1 x 9) = 9 |
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Published by:Michael Daani
| Answer: Option A |
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587 x 999 |
= 587 x (1000 - 1) |
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= 587 x 1000 - 587 x 1 |
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= 587000 - 587 |
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= 586413. |
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Published by:Michael Daani
| Answer: Option A |
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| Explanation: |
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4 | x z = 6 x 1 + 4 = 10
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5 | y -2 y = 5 x z + 3 = 5 x 10 + 3 = 53
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6 | z - 3 x = 4 x y + 2 = 4 x 53 + 2 = 214
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| 1 - 4
Hence, required number = 214. |
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Published by:Michael Daani
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