Page 287 - Start Up Mathematics_6

20. In a polyhedron if f represents the number of faces, v represents the number of vertices and

e represents the number of edges then the value of f + v – e is:
(a) 1 (b) 2 (c) 3 (d) 4 5

21. In the adjoining figure, the net of a 3-dimensional object is given. Which of 1 2 3 4
the following objects will be made on folding the net? 6

5 5 6 5
(a) 2 6 (b) 1 2 (c) 2 3 (d) 4 1

22. Simran has 4 red marbles and 3 blue marbles in her pocket. What is the minimum number of
marbles she must take out of her pocket to ensure that she has one of each colour?

(a) 2 (b) 3 (c) 4 (d) 5

23. A code word is to be formed using exactly 5 characters from the numerals 0 to 9. The first
three characters must be composite numbers. An example of acceptable code is:

(a) 46,893 (b) 46,293 (c) 81,453 (d) 6,84,173
24. If you are the 5th student from either end of a row standing for a group photograph, the total

number of students is:
(a) 10 (b) 9 (c) 8 (d) 11

25. Saumya scores 81, 82 and 86 marks in her first three exams. What must she score in her fourth
exam to have an overall average of 80?

(a) 71 (b) 82 (c) 83 (d) 88

26. Five students participated in a 100 m race. Aksh finished before Avi and Avi finished before
Nikhil and one more student. Zaheer finished after Rohan. Who came first?

(a) Avi (b) Aksh (c) Rohan (d) Zaheer

27. Filling of a plane with repetitions of figures in such a way that no figure overlaps and there
are no gaps is known as:

(a) tessellation (b) reflection (c) transformation (d) rotation
28. Kavya fires three shots. Each one hits a scoring ring with indicated points. 4
Which of the following score is possible? 7

(a) 22 (b) 18 10

(c) 16 (d) 13

29. Choose the alternative which closely resembles the mirror image of the given
combination.

SMS123

(a) SMS123 (b) 321SMS (c) 123SMS (d) SMS123

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