Related Questions

Two hundred multiples of seven are chosen at random. and 300 multiples of eight are chosen at random. Approximately what percentage of the 500 selected numbers are odd?
A 20%
B 25%
C 40%
D 80%
The average of first five multiples of 3 is
A 3
B 9
C 13
D 15
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?
A 81
B 81.5
C 82
D 84.5
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
What is the average of first 7 multiples of 7?
A 7
B 14
C 28
D 21
What is the average of first 11 multiples of 11?
A 22
B 44 \
C 55
D 66
What is the average of first 30 multiples of 9?
A 142
B 138.5
C 139.5
D 143.5
What is the average (arithmetic mean) of all multiples of 10 from 10 to 400 inclusive ?
A 190
B 195
C 200
D 205
What is the average of all the multiples of ten from 10 to 190 inclusive ?
A 90
B 95
C 100
D 110
What is the average of all the multiples of ten from 5 to 185 inclusive?
A 90
B 95
C 100
D 110

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