This is the number of combinations of 4 from 12
12C4 = 12!
----------
4! 8!
= 12*11*10*9 11*5*9 = 495
-------------- =
4*3*2*1
Answer:
Hope this helps :D
Step-by-step explanation:
Answer to question .2
Girls-226
Boys-295
Boys with glasses- 210
Girls with glasses- 104
Difference Between boys and girls- 69
Difference between boys with glasses and no glasses-85
Difference between girls with glasses and no glasses-122
The answer is 30 I believe
Answer: 36
Explanation: 36 is the smallest number divisible by both 12 and 18.
12x3 and 18x2 = 36