Question
1728, 1762, 1804, 1854, 1912,
1978 Find the wrong number in the given number series.Solution
ATQ, 1728 + (17 Γ 2) = 1762 1762 + (16 Γ 3) = 1804 1804 + (15 Γ 4) = 1854 1854 + (14 Γ 5) = 1912 1912 + (13 Γ 6) = 1982 Therefore, '1982' should come in place of '1978'.
The average age of (x + 7) trainees is 17 years. When a 39-year-old trainer joins, the average becomes 18 years. Find x% of 500.
In a company team of 18 members, the average age is 29 years. When 6 more members join, the average age falls to 26. What is the average age of the new ...
The average of the first 6 numbers is 'x+40', the average of the next 8 numbers is 'x', and the average of the remaining 6 numbers is 'xβ10'. If the a...
Average age of 30 students is 14 years. If 6 students leave the class, then the average age decreases by 0.5 years. Find the average age of the students...
- What is the average of the squares of the first 11 natural numbers?
There are βxβ students in a class. Out of them βyβ are girls. The number of boys is 5 more than the number of girls. The sum of weight and the a...
The average of 7 numbers is 32. If one number 28 is removed, what is the approximate average of the remaining 6 numbers?
- There are three distinct numbers βdβ, βeβ and βfβ. If, d = 120, (d + e) = 420 and (f β e) = 60, then find the average of d, e and f.
There are 4 numbers β A, B, C & D. B is 25% more than A and D is equal to average of A & C. Ratio of A to C is 3 : 4 and C is 5 more than B. Find valu...
The batting average for 27 innings of a cricket player is 47 runs. His highest score in an innings exceeds his lowest score by 157 runs. If these two i...