1
IIT-JEE 2001 Screening
MCQ (Single Correct Answer)
+2
-0.5
Let the positive numbers $$a,b,c,d$$ be in A.P. Then $$abc,$$ $$abd,$$ $$acd,$$ $$bcd,$$ are
A
NOT in A.P./GP./H.P.
B
inA.P.
C
in GP.
D
in H.P.
2
IIT-JEE 2001 Screening
MCQ (Single Correct Answer)
+2
-0.5
If the sum of the first $$2n$$ terms of the A.P.$$2,5,8,......,$$ is equal to the sum of the first $$n$$ terms of the A.P.$$57,59,61,.....,$$ then $$n$$ equals
A
10
B
12
C
11
D
13
3
IIT-JEE 2001 Screening
MCQ (Single Correct Answer)
+3
-0.75
The number of integer values of $$m$$, for which the $$x$$-coordinate of the point of intersection of the lines $$3x + 4y = 9$$ and $$y = mx + 1$$ is also an integer, is
A
2
B
0
C
4
D
1
4
IIT-JEE 2001 Screening
MCQ (Single Correct Answer)
+3
-0.75
Area of the parallelogram formed by the lines $$y = mx$$, $$y = mx + 1$$, $$y = nx$$ and $$y = nx + 1$$ equals
A
$$\left| {m + n} \right|/{\left( {m - n} \right)^2}$$
B
$$2/\left| {m + n} \right|$$
C
$$1/\left( {\left| {m + n} \right|} \right)$$
D
$$1/\left( {\left| {m - n} \right|} \right)$$
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