Numbers-Data Intensity 4 Multiple Questions and Answers.
Exercise Questions ::
Numbers
| Answer: Option C |
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| Explanation: |
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Let Sn = (2 + 4 + 6 + ... + 30). This is an A.P. in which a = 2, d = 2 and l = 30
Let the number of terms be n. Then,
a + (n - 1)d = 30
2 + (n - 1) x 2 = 30
n = 15.
Sn = |
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(a + l) |
= |
15 |
x (2 + 30) = (15 x 16) = 240. |
2 |
2 |
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Published by:Michael Daani
| Answer: Option C |
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Then number 6x2 must be divisible by 8.
x = 3, as 632 is divisible 8. |
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Published by:Michael Daani
| Answer: Option B |
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| Explanation: |
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2056 x 987 |
= 2056 x (1000 - 13) |
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= 2056 x 1000 - 2056 x 13 |
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= 2056000 - 26728 |
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= 2029272. |
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Published by:Michael Daani
| Answer: Option A |
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By hit and trial, we find that
47619 x 7 = 333333. |
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Published by:Michael Daani
| Answer: Option B |
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Let the number be x. Then
x = |
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36 x |
25 |
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= 100 |
9 |
Required number = 100 |
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Published by:Michael Daani
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