Trigonometry
Inverse Trigonometric Functions
MCQ (Single Correct Answer)Subjective
1
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

If $${}^n{C_4}$$, $${}^n{C_5}$$ and $${}^n{C_6}$$ are in A.P., then n is

A
7 or 14
B
7
C
14
D
14 or 21
2
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

The number of diagonals in a polygon is 20. The number of sides of the polygon is

A
5
B
6
C
8
D
10
3
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

$${}^{15}{C_3} + {}^{15}{C_5} + \,\,......\,\, + {}^{15}{C_{15}} = $$

A
$${2^{14}}$$
B
$${2^{14}} - 15$$
C
$${2^{14}} + 15$$
D
$${2^{14}} - 1$$
4
WB JEE 2012
MCQ (Single Correct Answer)
+1
-0.33
A vehicle registration number consists of 2 letters of English alphabet followed by 4 digits, where the first digit is not zero. Then, the total number of vehicles with distinct registration numbers is
A
262 $$\times$$ 104
B
$${}^{26}{P_2}$$ $$\times$$ $${}^{10}{P_4}$$
C
$${}^{26}{P_2}$$ $$\times$$ 9 $${}^{10}{P_3}$$
D
262 $$\times$$ 9 $$\times$$ 103
WB JEE Subjects