Blood does not clot in the blood vessels due to the presence of 

A copper wire is bent in the shape of a square of area 81 cm². If the same wire is bent in the form of a semicircle, the radius (in cm) of the semicircle is (take π=22/7 ) 

Two parallel chords are drawn in a circle of diameter 30 cm. The length of one chord is 24 cm and the distance between the two chords is 21 cm. The length of the other chord is 30 cm 

A person bought some rice and wheat for ₹ 380. The ratio of weight of rice and wheat is 4 : 3 and the price of equal amount of rice and wheat is in the ratio 5 : 6. The rice was bought of worth 

Profit after selling a commodity for 524 is the same as loss after selling it for Rs. 452. The cost price of the commodity is 

In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives. 

3, 7, 23, 95, ?

How many triangles are embedded in the figure given below?

Four forms of a dice are shown below. In this dice which word will be on the surface opposite to the word D?