D.1-5) Find the wrong number from the given series of numbers
1. 2807, 1400, 697, 347, 171, 84, 41, 20
a) 697 b) 347 c) 371 d) 84 e) 41
2. 828, 412, 204, 100, 48, 24, 9
a) 100 b) 48 c) 24 d) 412 e) 204
3. 496, 242, 116, 54, 24, 8, 4
a) 8 b) 24 c) 54 d) 116 e) 24
4. 324, 192, 92, 46, 16, 4, 2
a) 4 b) 16 c) 46 d) 92 e) 192
5. 24, 36, 81, 180, 540, 1890, 7560
a) 540 b) 1890 c) 36 d) 81 e) 180
1. A room is 15m 17cm long and 9m 2 cm wide. What least number of square tiles of same size will be required for that room?
a) 800 b) 810 c) 812 d) 814 e) 890
2. One of the diagonals of a rhombus is 24cm and each of its side is 20cm. Find the length of second diagonal
a) 30cm b) 32cm c) 28cm d) 34cm e) 36cm
3. If the length of a rectangle is increased by 60% then by what % width be reduced to keep its area of the rectangle same?
a) 37.5% b) 60% c) 40% d) 50% e) 42.5%
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