Math Puzzle 23
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This math puzzle 23 is on mode,median,probability,permutation etc.
1) In how many ways can a class representative be chosen from 'G' girls and 'B' boys?
A. (G x B) ways B. G ways C. B ways D. G/B ways E . (G+B) ways
2) Set A: {7,9.11,13} and Set B {1,2,3,4,5} If x is a number generated by multiplying a number from set A by a number from set B, how many possible values of x are even?
A. 4 B. 6 C. 8 D. 10 E. 12
3) How many 2-digits even numbers can be formed using the digit 1,3,6.
A. 2 B. 3 C. 4 D. 5 E. 6
4) In how many ways can 1 physics and 1 chemistry book be selected from 7 physics and 8 chemistry books?
A. 56 B. 5 C. 8 D. 7 E. 2
5)
The figure above shows a rectangular piece of cardboard that is divided into 6 rectangular compartments. Rectangles C and D are twice the area of rectangles A and B. Rectangles E and F are three times the area of rectangle C and D. A coin is tossed on the cardboard. What is the probability that it will fall in C?
A. 1/18 B. 1/9 C. 2/9 D. 2/3 E. 1
6) Rita buys nine-raffle tickets out of 1000 sold. She does not win first prize. What is the probability that she wins second prize?
A. 9/1000 B. 8/999
C. 8/111 D. 1/111
E. 9/111
7) For the following set of numbers, what is the value of
mode - median?
2, 3, 3, 4, 6, 9, 15
A. - 3 B. - 1
C. 0 D. 1
E. 4
8) A basket has 8 apples and twice that number of oranges. Tim takes out half of the fruits from the bag. How many fruits are left in the basket?
A. 6 B. 10 C. 12 D. 13 E. 24
9) How much is 1/4 times 1/2?
A. 1/6 B. 1/2 C. 2 D. 1/8 E. 8
10) A coin is tossed 9 times in which 4 heads and 5 tails turned up. If the coin is tossed a 10th time, what is the probability of getting a heads?
A. 0.1 B. 0.25
C. 0.5 D. 0.8
E. 1
Math puzzle 23
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