Question
If area of similar triangles ∆ ABC and ∆ DEF be 64
sq Cm and 121 sq cm and EF = 15.4 cm then BC equalsSolution
We know that the ratio of the areas of two similar triangles is equal to the square of the ratio of their corresponding sides. Here it is given that ΔABC ~ ΔDEF Given, EF = 15.4 cm Therefore, Area of ΔABC / Area of ΔDEF = (BC)2/(EF)2 64 cm2/ 121 cm2 = (BC)2/(15.4)2 (BC)² = [(15.4)2 × 64]/121 BC = (15.4 × 8)/11 BC = 11.2 cm
Find the wrong term in the series given below.
38, 44, 32, 50, 24, 56, 20
A series is given with two wrong terms. Select the wrong term in the given series.
32, 43, 58, 73, 92, 117, 144
5, 15, 30, 135, 405, 1215, 3645
Find the wrong number in the given series.
5, 3, 6, 17.25, 64.75
A series is given with one wrong term. Select the correct alternative from the given ones that will complete the series.
33, 44, 66, 110, 199, 374
Find out the Wrong number in the following number series.
2, 123, 204, 256, 278, 287
In this question, one term in the number series is wrong. Find out the wrong term.
130, 135, 143, 154, 168, 183, 205
In the following question, select the wrong number from the given alternatives.
52, 26, 26, 52, 208, 1644
Select the number from among the given options that is wrong in the following series.
22, 30, 46, 78, 146, 270
Select the wrong term in the series.
10, 19, 23, 52, 61, 133, 149
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