1. 7/3
2. 3/7
3. 1/16
4. 16
7/3
1. Equilateral
2. Isosceles
3. Right angled isosceles
4. Right angled
Right angled
1. x2+sinx
2. x2sinx
3. sin2x
4. sinx2
sinx<sup>2</sup>
1. A
2. 2A
3. 3A
4. -3A
3A
1. 15
2. 22
3. 25
4. 27
27
1. -12
2. 15
3. 24
4. -15
15
1. 7
2. 10C8
3. 120
4. 210
120
1. 6
2. 8
3. 10
4. 12
12
1. (1.3.5.....39)/20!
2. [(1.3.5.....39)/20!]220
3. 40!/20!
4. 40! 220
[(1.3.5.....39)/20!]220
1. -1/5
2. 1/5
3. 34/5
4. -34/5
1/5