1
GATE CSE 2022
+1
-0.33

Let r be a root of the equation x2 + 2x + 6 = 0. Then the value of the expression (r + 2) (r + 3) (r + 4) (r + 5) is

A
51
B
$$-$$ 51
C
126
D
$$-$$ 126
2
GATE CSE 2022
+1
-0.33

In a recently conducted national entrance test, boys constituted 65% of those who appeared for the test. Girls constituted the remaining candidates and they accounted for 60% of the qualified candidates.

Which one of the following is the correct logical inference based on the information provided in the above passage?

A
Equal number of boys and girls qualified
B
Equal number of boys and girls appeared for the test
C
The number of boys who appeared for the test is less than the number of girls who appeared
D
The number of boys who qualified the test is less than the number of girls who qualified
3
GATE CSE 2022
+1
-0.33

A box contains five balls of same size and shape. Three of them are green coloured balls and two of them are orange coloured balls. Balls are drawn from the box one at a time. If a green ball is drawn, it is not replaced. If an orange ball is drawn, it is replaced with another orange ball.

First ball is drawn. What is the probability of getting an orange ball in the next draw?

A
$${1 \over 2}$$
B
$${2 \over 25}$$
C
$${19 \over 50}$$
D
$${23 \over 50}$$
4
GATE CSE 2022
+1
-0.33

The corners and mid-points of the sides of a triangle are named using the distinct letters P, Q, R, S, T and U, but not necessarily in the same order. Consider the following statements :

$$\bullet$$ The line joining P and R is parallel to the line joining Q and S.

$$\bullet$$ P is placed on the side opposite to the corner T.

$$\bullet$$ S and U cannot be placed on the same side.

Which one of the following statements is correct based on the above information?

A
P cannot be placed at a corner
B
S cannot be placed at a corner
C
U cannot be placed at a mid-point
D
R cannot be placed at a corner
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