In a class of 120 students numbered 1 to 120, all even number students opt for physics, whose number are divisible by 5 opt for
chemistry & those whose no are divisible by 7 opt for math. How many opt for none of these subjects?
1 answer:
<span>41 opt for none of these subjects
60 even numbers between 1 and 120
24 numbers are divisible by 5 between 1 and 120.
(however 12 of them end in 0 and are even numbers therefore ruled out)
12 multiples are left
17 multiples of 5 between 1 and 120
however 8 of them are multiples of 2 and 2 are multiples of 5
7 multiples are left
60 + 12 + 7 = 79
120 - 79 = 41</span>
You might be interested in
Answer:
the answer for a is 2 and 2/4 which is equal to 2 and 1/2
Step-by-step explanation:
Answer:
1/4= 3/12-1/12 which is 2/12 or 1/6 cuz 3/12 is bigger than -1/12
Step-by-step explanation:
Answer:
= 5
Step-by-step explanation:
z - x + y
4 - 2 + 3 = 5
ANSWER

EXPLANATION
The given matrix is a 4 by 4 matrix.
We want to find

This is the entry in Row 1 Column 4.
We trace row 1 Column 4 and identify the entry in their intersection.
This entry is 5
