1
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

Two dice are tossed once. The probability of getting an even number at the first die or a a total of 8 is

A
$${1 \over {36}}$$
B
$${3 \over {36}}$$
C
$${11 \over {36}}$$
D
$${23 \over {36}}$$
2
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

The probability that at least one of A and B occurs is 0.6. If A and B occur simultaneously with probability 0.3, then P(A') + P(B') is

A
0.9
B
0.15
C
1.1
D
1.2
3
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

4 boys and 2 girls occupy seats in a row at random. Then the probability that the two girls occupy seats side by side is

A
$${1 \over 2}$$
B
$${1 \over 4}$$
C
$${1 \over 3}$$
D
$${1 \over 6}$$
4
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

A coin is tossed again and again. If tail appears on first three tosses, then the chance that head appears on fourth toss is

A
$${1 \over {16}}$$
B
$${1 \over {2}}$$
C
$${1 \over {8}}$$
D
$${1 \over {4}}$$
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