Day 348: NDA Maths

1. A.
   $\frac{7}{36}$
2. B.
   $\frac{7}{18}$
3. C.
   $\frac{5}{18}$
4. D.
   $\frac{11}{36}$

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1. A.
   3:5
2. B.
   2:9
3. C.
   9:1
4. D.
   5:3

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1. A.
   3-7, 7-13, 13-17, 17-23, 23-27
2. B.
   2·5-7·5, 7·5-12·5, 12·5-17·5, 17·5-22·5, 22·5-27·5
3. C.
   1·5-8·5, 8·5-11·5, 11·5-18·5, 18·5-21·5, 21·5-28·5
4. D.
   2-8, 8-12, 12-18, 18-22, 22-28

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1. A.
   -1
2. B.
   0
3. C.
   1
4. D.
   2

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1. A.
   21
2. B.
   25
3. C.
   31
4. D.
   36

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