Numbers-Data Intensity 4 Multiple Questions and Answers.
Exercise Questions ::
Numbers
| Answer: Option C |
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Unit digit in 34 = 1 ==> Unit digit in (34)16 = 1
Unit digit in 365 = Unit digit in [ (34)16 x 3 ] = (1 x 3) = 3
Unit digit in 659 = 6
Unit digit in 74 ==> Unit digit in (74)17 is 1.
Unit digit in 771 = Unit digit in [(74)17 x 73] = (1 x 3) = 3
Required digit = Unit digit in (3 x 6 x 3) = 4. |
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Published by:Michael Daani
| Answer: Option D |
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| Explanation: |
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3251 Let 4207 - x = 3007
+ 587 Then, x = 4207 - 3007 = 1200
+ 369
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4207
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Published by:Michael Daani
| Answer: Option B |
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| Explanation: |
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Let 7589 -x = 3434
Then, x = 7589 - 3434 = 4155 |
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Published by:Michael Daani
| Answer: Option B |
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| Explanation: |
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(217)2 + (183)2 |
= (200 + 17)2 + (200 - 17)2 |
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= 2 x [(200)2 + (17)2] [Ref: (a + b)2 + (a - b)2 = 2(a2 + b2)] |
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= 2[40000 + 289] |
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= 2 x 40289 |
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= 80578. |
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Published by:Michael Daani
| Answer: Option A |
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| Explanation: |
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Unit digit in the given product = Unit digit in (4 x 8 x 7 x 3) = (672) = 2 |
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Published by:Michael Daani
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