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Quiz Discussion

Find the average of all the numbers between 6 and 34 which are divisible by 5 -

Course Name: Quantitative Aptitude

1] 18
2] 20
3] 24
4] 30

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#	Quiz
1 Discuss	The average of five numbers is 7. If three new numbers would be added, then the new average comes out to be 8.5. What is the average of those three new numbers ? 1] 9 2] 10.5 3] 11 4] 11.5 Solution
10 Discuss	If the mean of 4 observations is 20, when a constant 'c' is added to each observation, the mean becomes 22. The value of c is : 1] 6 2] -2 3] 2 4] 4 Solution
2 Discuss	The average age of three boys is 15 years. If their ages are in ratio 3 : 5 : 7, the age of the youngest boy is 1] 21 years 2] 18 years 3] 15 years 4] 9 years 5] 12 years Solution
3 Discuss	a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numbers is : 1] $3\left( {\frac{{a + n}}{2}} \right)$ 2] $\left( {\frac{{1 + d}}{2}} \right)$ 3] $\left( {\frac{{a + b + m + n}}{4}} \right)$ 4] $3\left( {\frac{{j + c + n +g}}{4}} \right)$ Solution
4 Discuss	Find the average of 205, 302, 108, 403, and 202- 1] 450 2] 1125 3] 244 4] 1220 Solution
5 Discuss	The average (arithmetic mean) of 330, 360 and 390 is : 1] ${3^{27}} + {3^{57}} + {3^{87}}$ 2] ${3^{29}} + {3^{59}} + {3^{89}}$ 3] ${3^{60}}$ 4] ${3^{177}}$ Solution
6 Discuss	Amount five people with monthly income (in Rs.) 15000, 26000, 16000, 19000, 50000, how many will have income less than the mean income of five people? 1] 1 2] 2 3] 3 4] 4 Solution
7 Discuss	The average of the first five multiples of 3 is- 1] 3 2] 9 3] 12 4] 15 Solution
8 Discuss	The average age of A, B, C, D and E is 40 years. The average age of A and B is 35 years and the average of C and D is 42 years. Age of E is : 1] 48 years 2] 46 years 3] 42 years 4] 45 years Solution
9 Discuss	Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average by 8 runs. His new average is: 1] 20 2] 21 3] 28 4] 32 Solution
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