Question

construct a quadrilateral ABCD in which AB =5cm, BC=5cm,CD=6cm, angle B =135° and angle D= 90°​

Answer 1

Answer:

⇒ Draw a line segment AB = 5cm.

⇒ With A as a center and radius AC = 5cm, draw an arc.

⇒ With B as a center and radius BC = 6cm, draw an arc, intersecting the previous arc at point C.

⇒ With A as a center and radius AD = 3cm, draw an arc.

⇒ Take C as a center with radius CD = 4cm draw an arc intersecting the previous arc at point D.

⇒ Join AC, BC, AD and CD.

Thus, ABCD is a required quadrilateral

Answer 2

Answer:

A box contains 20 items & 10% of them are defective. Three items are randomly selected from the box. Find the probability that,

1) Two items are defective

2) Two items are non-defective

3) All three items are non-defective among the three selected items.

Answers

1) = 3/190

2) = 51/190

3) = 68/95