1
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
If c0, c1, c2, ......, c15 are the binomial coefficients in the expansion

of (1 + x)15, then the value of $${{{c_1}} \over {{c_0}}} + 2{{{c_2}} \over {{c_1}}} + 3{{{c_3}} \over {{c_2}}} + ... + 15{{{c_{15}}} \over {{c_{14}}}}$$ is
A
1240
B
120
C
124
D
140
2
WB JEE 2019
MCQ (Single Correct Answer)
+1
-0.25
Change Language
72n + 16n $$-$$1 (n$$ \in $$ N) is divisible by
A
65
B
63
C
61
D
64
3
WB JEE 2019
MCQ (Single Correct Answer)
+1
-0.25
Change Language
The number of irrational terms in the expansion of $${\left( {{3^{{1 \over 8}}} + {5^{{1 \over 4}}}} \right)^{84}}$$ is
A
73
B
74
C
75
D
76
4
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.25
Change Language
The number (101)100 $$-$$ 1 is divisible by
A
104
B
106
C
108
D
1012
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