The average of five numbers is 306.4. The average of the fir...

The average of five numbers is 306.4. The average of the first two numbers is 431 and the average of the last two numbers is 214.5. What is the third number?

Course Name: SQL -Structured Query Language

1] 52
2] 108
3] 321
4] Cannot be determined
5] None of these

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1 Discuss	A batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after 17th inning. 1] 40 2] 39 3] 52 4] 55 Solution
10 Discuss	The mean of 25 observations was found to be 78.4. But later on it was found that 96 were misread as 69. The correct means is- 1] 76.54 2] 78.4 3] 79.48 4] 81.32 Solution
2 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
3 Discuss	The average age of 20 boys in a class is 12 years. 5 new boys are admitted to the class whose average age is 7 years. The average age of all the boys in the class becomes: 1] 8.2 years 2] 9.5 years 3] 12.5 years 4] 11 years Solution
4 Discuss	The average height of 30 boys out of a class of 50 is 160 cm. If the average height of the remaining boys is 165 cm, the average height of the whole class (in cm) is : 1] 161 2] 162 3] 163 4] 164 Solution
5 Discuss	What is the average of the first six (positive) odd number each of which is divisible by 7? 1] 42 2] 43 3] 47 4] 49 Solution
6 Discuss	The average weight of 47 balls is 4 g. if the weight of the bag (in which the balls are kept) be included; the calculated average weight per ball increases by 0.3 g. What is the weight of the bag? 1] 14.8 g 2] 14.4 g 3] 15 g 4] 18.6 g 5] None of these Solution
7 Discuss	The average age of 3 children in a family is 20% of the average age of the father and the eldest child. The total age of the mother and the youngest child is 39 years. If the father's age is 26 years, what is the age of the second child ? 1] 15 years 2] 18 years 3] 20 years 4] Cannot be determined Solution
8 Discuss	Nine persons went to a hotel for taking their meals. Eight of them spent Rs. 12 each on their meals and the ninth spent Rs. 8 more than the average expenditure of all the nine. What was the total money spent by them. 1] Rs. 115 2] Rs. 116 3] Rs. 117 4] Rs. 118 Solution
9 Discuss	A batsman makes a score of 270 runs in the 87th inning and thus increase his average by a certain number of runs that is a whole number. Find the possible values of the new average. 1] 98 2] 184 3] 12 4] All of these 5] None of these Solution
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