Answer:
13/20
Step-by-step explanation:
Another way of asking this question is to ask for the difference of 1/4 and 9/10. The equation will start with 9/10 - 1/4.
9/10 - 1/4
Equations can only be added or subtracted when the denominators (bottom numbers) are the same. To do this, you must find a number that can be divided by both denominators. In this case, 20 can be divided by 4 and 10.
(9*2)/(10*2) = 18/20
(1*5)/(4*5) = 5/20
18/20 - 5/20 = 13/20
13/20 cannot be simplified as 13 is a prime number
13/20
Answer:
Third option 2,6,24,120,720
Step-by-step explanation:
Step 1
The first step is to simplify the expression for the nth term of this sequence using the definition of the factorial symbol. The simplification of this expression is done below,
Step 2
The second step is to use the substitute different values of n into the expression of the nth term to work out which sequence corresponds to the correct answer.
The terms of the sequence are {2,6,24,120,720}. The correct answer is the third option.
If I remember correctly
16 : 1, 2 4, 8, and 16
56: 1, 2, 4, 7, 8, 14, 28, and 56.