Three maths classes: X, Y, and Z take an algebra test. The average score of class X is 83. The average score of class Y is 76. The average score of class Z is 85. The average score of class X and Y is 79 and the average score of class Y and Z is 81. What is the average score of the combined classes X, Y, and Z?

Three maths classes: A, B and C take an algebra test. The average score of class A is 83. The average score of class B is 76. The average score of class C is 85. The average score of class A and B is 79 and average score of class B and C is 81. What is the average score of classes A, B, C ?

A

81

B

78

C

80.5

D

81.5

Three math classes , X, Y , and Z, take an algebra test. The average score in class X is 83. The average score in class Y is 76. The average score in class Z is 85. The average score of all students in classes X and Y together is 79. The average score of all student classes Y and Z together is 81. What is the average for all the three classes?

A

81

B

81.5

C

82

D

84.5

Ten books are arranged in a row following a certain sequence. Among them 3 are History , 3 are Economics, 2 are Maths and 2 are English. From the left, there is an English book between a History and Maths book, a history book between a Maths and an English book, an Economics book between an English and a Maths Book. a Maths book between two Economics books and two Economics two Economics book between a Maths and a History book. Book of which subject is at the sixth position from the left?

A

English

B

Economics

C

History

D

Mathematics

The figure shows a shape ABC and its mirror image A₁B₁C₁ across the horizontal axis (X-axis). The coordinate transformation matrix that maps ABC to A₁B₁C₁ is

A

\\

B

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In an exam, the avarage marks obtained by John in English, Maths, Hindi and Drawing were 50. His average marks in Maths, Science, Social Studies andCraft were 70. If the average marks in all seven subjects is 58, his score in maths was

A

50

B

52

C

60

D

74

Read the data given and answer the following questions In a class of 60 students: 42 like Maths, 32 like English, 12 like neither Maths nor English Students who like only Maths forms what percentage of the total number of students in the class?

A

26.67%

B

24.22%

C

28.80%

D

32.82%

Read the following question and decide which of the given statements is/are sufficient. .
In a class of 50 students, how many girls scored above 80% in Maths?
Statements:
1. Exactly four boys scored above 80% in Maths.
2.One-third of the class scored above 80% in Maths

A

Either 1 or 2 is sufficient to answer the question.

B

Both 1 or 2 together are sufficient to answer the question.

C

1 alone is sufficient while 2 alone is not sufficient to answer the question.

D

.2 alone is sufficient while 1 alone is not sufficient to answer the question.

Read the data given and answer the following questions In a class of 60 students: 42 like Maths, 32 like English, 12 like neither Maths nor English How many students like both Maths and English?

A

28

B

26

C

16

D

12

Which two of the following are legal declarations for abstract classes and interfaces?
1. final abstract class Test {}
2. public static interface Test {}
3. final public class Test {}
4. protected abstract class Test {}
5. protected interface Test {}
6. abstract public class Test {}

A

1 and 2

B

2 and 4

C

3 and 5

D

5 and 6

E

3 and 6

Sripad has scored average of 65 marks in three objects. In no subjects has he secured less than 58 marks. He has secured more marks in Maths than other two subjects. What could be his maximum score in Maths ?

A

79

B

77

C

76

D

73