Trigonometry
Inverse Trigonometric Functions
MCQ (Single Correct Answer)Subjective
1
WB JEE 2018
MCQ (More than One Correct Answer)
+2
-0
On the occasion of Dipawali festival each student of a class sends greeting cards to others. If there are 20 students in the class, the number of cards sends by students is
A
$${}^{20}{C_2}$$
B
$${}^{20}{P_2}$$
C
$$2 \times {}^{20}{C_2}$$
D
$$2 \times {}^{20}{P_2}$$
Questions Asked from MCQ (Multiple Correct Answer)
WB JEE Subjects