Question
The sum of the perimeters of a square and a rectangle is
120 metres. If the sum of the length and breadth of the rectangle is 30 m, then find the area of the square.Solution
Perimeter of the rectangle = 2 x 30 = 60 m Perimeter of the square = 120 – 60 = 60 m Each side of the square = 60/4 = 15 m Therefore, area of the square = 152 = 225 m2
2,0, 9, 20, ‘?’, 714
Three series are given below. You have to find the values of P, Q and R, then establish a relationship among them.
I:Â Â 840, P , 584, 456, 5...
22, 23, 31, 57, 122, 247
5, 8, 17, ?, 37, 48
4 6 ? 31 119 601
...18, 32, 50, 82, 132, ?
6Â Â Â Â Â Â Â Â Â Â Â Â Â Â 3Â Â Â Â Â Â Â Â Â Â Â Â Â Â 24Â Â Â Â Â Â Â Â Â Â Â 218Â Â Â Â Â Â Â Â Â 3486Â Â Â Â Â Â Â 43575
10      �...
12Â Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â Â Â Â Â 12Â Â Â Â Â Â Â Â Â Â 4.5Â Â Â Â Â Â Â Â Â 15
18      �...
30 27 20 9 ? - 25
23 48 98 198 ? 798
...
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