1. 3
2. 1/3
3. 2
4. 1/2
3
1. (n +1)2n-1
2. (n +1)2n
3. n.2n-1
4. n.2n
n.2n-1
1. 1/2(22n_2n Cn)
2. 1/2(2n_2n Cn)
3. 2n_2n Cn
4. 22n_2n Cn
1/2(22n_2n Cn)
1. 4√3
2. 2√3
3. 2√10
4. 2√13
4√3
1. ((n – r + 1)x)/r
2. r/(n – r +1)
3. 1/(n – r + 1)x
4. r/(n – r+1)x
r/(n – r+1)x
1. 1 : 4
2. 2 : 1
3. 1 : 2
4. 1 : 1
1 : 1
1. -15
2. 24
3. 15
4. -12
15
1. Cannot be decided
2. S1 = S2
3. S1< S2
4. S1> S2
S1> S2
1. x2 + y2 =2a2
2. x2 + y2 =4a2
3. x2 + y2 =6a2
4. x2 + y2 =8a2
x2 + y2 =2a2
1. 84
2. 48
3. -1
4. 1
84