If s and t are integers greater than 1 and each is a factor of the integer n, which of the following must be a factor of ?
1)
2) (st)²
3) s+t
a) none
b) 1 only
c) 2 only
d) 3 only
e) 1 and 2

The answer is E) 1 and 2

Step-by-step explanation:

Given that s and t are greater than 1.

Let's assume that s = 4 and t = 2 and n = 8 (each on is a factor of the integer 8)

Now check for the options -

1) ( Can be a factor of  )

2) ( Can be a factor of  )

3) ( Cannot be a factor of  )

Thus, the option is E

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !