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Posts Archive
13/02/2024
The average age of 30 students is 20 years and average age of 20 other students is 30 years. The average age of total number of students is: (SSC MTS 2017) (a) 24 years (b) 48 years (c) 25 years (d) 50 years
What is the arithmetic mean of first 20 odd natural numbers?
(a) 17 (b) 19 (c) 22 (d) 20
10/02/2024
What is the average of the squares of the first 19 natural numbers?
09/02/2024
The average age of 5 members of a family is 24 years. If the youngest member is 8 years old, then what was the average age (in years) of the family at the time of the birth of the youngest member?
(a) 16 (b) 20 (c) 24 (d) 32
08/02/2024
A cricket player after playing 10 tests scored 100 runs in the 11th test. As a result, the average of his runs is increased by 5. The present average of runs is (a) 45 (b) 40 (c) 50 (d) 55
7/02/2024
The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then the sixth number is (a) 24 (b) 44 (c) 30 (d) 34
06/02/2024
The average of 50 numbers is 38. If two numbers namely 45 and 55 are discarded, the average of the remaining numbers is: (a)37 (b) 35 (c) 32.5 (d) 37.5
5/02/2024
The average of the first nine integral multiples of 3 is
(a) 15 (b) 18 (c) 21 (d) 12
03/02/2024
If A is a greater than B by 7, B is greater than C by 16, and A +B-C is 255, then the value of 3A+C-4B is: (a) 5 (b) 10 (c) 8(d) 4
