Exams

What is the value of ( 1/3 - cosec30°) ?

n an alloy, lead and tin are in the ratio of 2 : 3. In the second alloy, the ratio of same elements is 3 : 4. If equal quantities of these two alloy are mixed to forma new alloy, then what will be the ratio of these two elements in the new alloy? 

What is the value of 643 × 121289 - 169 ?

In January 2018, who has been awarded the 9th Infosys award for engineering and computer science?

If a - b = 5 and a2 + b2 = 97, ab = ?

The rate of discount on an article whose marked price is Rs. 170 and selling price is Rs. 130?

If the angles of a triangle are in the ratio of 2 : 5 : 8, then find the value of the largest angle.

An arc of 30° in one circle is double an arc in a second circle, the radius of which is three times the radius of the first. Then the angles subtended by the arc of the second circle at its centre is