Question
15 is divided in three parts which are in arithmetic
progression (A.P.) in such a way that the sum of their square is 83. Find the smallest part?Solution
Let the three numbers be (a - d), a, (a + d) a - d + a + a + d = 15 3a = 15 a = 5 (5 - d)² + 5² + (5 + d)² = 83 25 + d² - 10d + 25 + 25 + d² + 10d = 83 2d² = 8 d² = 4 d = ± 2 series = 3,5,7
1519.98 ÷ 50.48 × 15.12 = ? × 4.16
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
36.05 × 5.02 + 12.052 = ? + 9.09 × 4.04
The average marks of 15 candidates were reported as 84. However, it was later discovered that the marks of three candidates were ...
(752.09 - 43.04 x 7.94) ÷ 16.9 = ?
180.25 × 14.995 ÷ √26 = ? × 5.985
(31.9)3 + (34.021)² - (16.11)3 - (42.98)² = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
