11th Class Math MCQS
N! can be written as
n(n – 1)
n(n – 1)(n – 2) ….3.2.1
n(n – 1)!
Both (a) and (c)
A particular outcome of sample space is called
Out come
Event
Probability
Sample space
There are 5 green and 3 red balls in a box, one ball is taken out, the probability that the ball drawn is yellow is:
5/8
1
Zero
3/8
The letter of the word ” FASTING” taken all at a time can be written in
50
5040
504
40320
For an event E which one is true:
0 ? P (E) ? 1
-1 ? P (E) ? 1
0 ? P (E) ? 2
0 ? P (E) ? 1
The number of words that can formed from the letters PLANE when no letter is repeated is
100
None of these
120
5
nPn is always equals to
n!
None of these
1!
0!
In how many ways of 5-digit numbers that can be formed form the digit 1,24,6,8 when the digits 2 and 8 are next to cach – other?
48
96
72
24
nCr x r! =
nPr
None of these
n+1Cr
nCr+1
If A and B are disjoint events then P(A?B) =_______
P(A) + (B) = P(A?B)
P(A)P(B)
P(A) -P(B)
P(A) + P(B)
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