# Math Puzzle 23

We at ask-math believe that educational material should be free for everyone. Please use the content of this website for in-depth understanding of the concepts. Additionally, we have created and posted videos on our youtube.

We also offer One to One / Group Tutoring sessions / Homework help for Mathematics from Grade 4th to 12th for algebra, geometry, trigonometry, pre-calculus, and calculus for US, UK, Europe, South east Asia and UAE students.

Affiliations with Schools & Educational institutions are also welcome.

Please reach out to us on [email protected] / Whatsapp +919998367796 / Skype id: anitagovilkar.abhijit

We will be happy to post videos as per your requirements also. Do write to us.

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)
 E F C D A B

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

From Math puzzle 23 to Math Teasers

Home

Russia-Ukraine crisis update - 3rd Mar 2022

The UN General assembly voted at an emergency session to demand an immediate halt to Moscow's attack on Ukraine and withdrawal of Russian troops.