2 more qs
Q1. One red flag, three wicket flags and two blue flags are arranged in a line such that :
I. No two adjacent flags are of the same color
II. The flags at the two ends of the line are of different color
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In how many different ways can the flags be arranged?
a. 6 b. 4 c. 10 d. 2
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Q2. Let S be the set of integers x such that
I. 100 <= x <= 200
II. x is odd
III. x is divisible by 3 but not 7
How many elements does S contain?
a. 16 b. 12 c. 11 d. 13
n/a
Q1
Three wicket flags can be arranged in 2 ways( either 1-3-5 or 2-4-6)
One red flag can be arranged in remaining 3 ways. Remaining two blue flags can be arranged in remaining two places.So total number of possible arrangements is 3*2 = 6
Q2.
There are 13 elements in S { 111, 117, 123, 129, 135, 141, 153, 159, 165, 171, 177, 183, 195}
Kamal Lohia
n/a
Q1
ans (a) 6
Q2
ans (b) 12
the numbers are 111,117,123,129,135,141,153,
159,165,171,177 and 195
thank u
shahid
n/a
n/a