1
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is $${}^{47}{C_4} + {}^{51}{C_3} + \sum\limits_{j = 2}^5 {{}^{52 - j}{C_3}} $$ equal to?
A
$${}^{52}{C_4}$$
B
$${}^{51}{C_5}$$
C
$${}^{53}{C_4}$$
D
$${}^{52}{C_5}$$
2
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The number of terms in the expansion of (x + a)100 + (x $$-$$ a)100 after simplification is
A
202
B
101
C
51
D
50
3
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
In the expansion of (1 + x)50, the sum of the coefficients of odd powers of x is
A
226
B
249
C
250
D
251
4
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The value of [C(7, 0) + C(7, 1)] + [C(7, 1) + C(7, 2)] + ..... + [C(7, 6) + C(7, 7)] is
A
254
B
255
C
256
D
257
EXAM MAP