Important Previous Year Math Question Class 10

 ( CBSE 2011) 

1. Find how many two-digit numbers are divisible by 6? 

2.  Find an A.P. whose fourth term is 9 and the sum of its sixth term and the thirteenth term is 40. 

3. If pth, qth and rth terms of an A.P. are a, b, c respectively, then show that (a – b)r + (b – c)p + (c – a)q = 0.

4. In Figure, an equilateral triangle has been inscribed in a circle of radius 6 cm. Find the area of the shaded region. [Use π = 3.14]