Related Questions

What does 'doctrine' mean ?
A adept
B counterfeit
C brief
D scorn
In 2007, the arithmetic mean of the annual incomes of Rahim and Karim was Taka 3800 . The arithmetic mean of the annual incomes of Karim and Ripon was Ripon and Rahim was TaKa5800. What is the arithmetic mean of the incomes of the three ?
A 3200
B 1200
C 2400
D 4800
The mean of the 5 smallest numbers from a group is 15 while the mean of all the 13 members of the group taken together is 17. What is the mean of the 8 largest numbers?
A 18.50
B 17.75
C 18.75
D 18.25
The arithmetic mean of the 5 consecutive integers starting with 'p' is 'q'. What is the arithmetic mean of 9 consecutive integers that start with (p+2)?
A 2+p+q
B 2+q
C 2q+2
D 4+q
The mean of 50 observations was 36. It was found later that an observation 48 was worngly taken as 23. The correct new mean is :
A 35.2
B 36.1
C 36.5
D 39.1
If the average (arithmetic mean) of x and y is 60 and the average(arithmetic mean)of y and z is 80,what is the value of(z-x)?
A 40
If the average (arithmetic mean) of a,b, and c is 40, what is the average (arithmetic mean) of (3a+10), (3b+10), and (3c+10)?
A 90
B 120
C 130
D 150
If the arithmetic mean of seventy five numbers is calculated, it is 35. If each number is increased by 5, then mean of new numbers is:
A 30
B 40
C 70
D 90
A student was asked to find the arithmetic mean of the numbers 3, 11. 7 .9, 15, 8, 19 ,17,14 and p. He found the mean to be 12. What should be the number in place of p?
A 7
B 3
C 17
D 31
If the mean of numbers 28, x, 42, 78 and 104 is 62, what is the mean of 48,62,98,124 and x?
A 58
B 390
C 78
D 310

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