SSC CHSL PREVIOUS YEAR (2020) Mathematics (Average) Questions With Answers
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Average
1. A man bought 5 shirts at ₹450 each, 4 trousers at ₹750 each and 12 pairs of shoes at ₹750 each. What is the average expenditure per article ?
-
A) ₹900
₹678.50 "
2. The average of 30 numbers is 12. The average of the first 20 of them is 11 and that of the next 9 is 10. The last number is
-
A) 60
50 "
3. The average of first 10 even numbers is
-
A) 10
11 "
4. The average of 5 consecutive numbers is n. If the next two numbers are also included. The average will
-
A) remain the same.
1 "
5. The average of
1²,2²,3²,4²,5²,6²,7²,8²,9²,10² is
-
A) 46.5
38.5 "
6. Tea worth ₹126 per kg and ₹135 per kg are mixed with a third variety in the ratio 1:1:2. If the mixture is worth ₹153 per kg, the price of the third variety per kg will be
-
A) ₹169.5
₹175.5 "
7. The average age of four brothers is 12 yr. If the age of their mother is also included. The average is increased by 5 yr. The age of mother (in yr ) is
-
A) 37
37"
8. The average of 100 numbers is 44. The average of these 100 numbers and 4 other new numbers is 50. The average of the four new numbers will be
200 "
9. Out of seven given numbers, the average of the first four numbers is 4 and that of the last 4 numbers is also 4 . If the average of all the seven numbers is 3, fourth number is
-
A) 4
11 "
10. The average height of 10 students in a class is 105 cm. If 20 more students with an average height of 120 cm join the class, what will the new average height ?
-
A) 105 cm
115 cm"
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