Question
The length of the diagonal of a rectangle is 25 cm, and
the ratio of its length to its breadth is 4:3. Find the area of the rectangle.Solution
Let the length and breadth of the rectangle be 4x and 3x, respectively. Diagonal = √(4x)² + (3x)² = 25 √(16x² + 9x²) = 25 √25x² = 25 x = 5 Length = 4x = 20 cm Breadth = 3x = 15 cm Area = Length * Breadth = 20 * 15 = 300 cm² Correct answer: a. 300 cm²
What should come in place of (?) question mark in the given number series.
81, 73, 66, 60, 55, ?
14 6 4 4 ? 48
...What should come in place of (?) question mark in the following number series.
5, 11, 23, 47, 95, ?
In each of the following number series, one term is missing. Find the missing term.
1, 4, 9, 16, 25, ?
What will come in place of the question mark (?) in the following series?
4, 11, 32, 95, 284, 851, ?
156, 182, 210, 240, 272, ?
31    32      35      ?      47       56
...What should come in place of (?) question mark in the following number series.
1, 2, 6, 24, 120, ?
What value should come in the place of (?) in the following number series?
71, 72, 76, 103, ?, 244254, ?, 1022, 1150, 1214, 1246
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