Answer:
1 .
because sqare root of -1= 1
Firstly, seeing that the sequence is based on odd numbers I would say that this is the formula (which will allow you to know whatever term):
nth term = 2n-1
Hope this helps!
The second train will catch up with the first train in 1.6 hours
GCM of 8 and 9 is 72
6/9 = 64/72
7/8 = 63/72
1 1/72
Keep the denominators the same and subtract the numerators. So for example in your example:
7/8 - 3/8
Leave the 8 alone. Subtract 3 from 7.
7 - 3 = 4
So answer is:
4/8
Sometimes they may have to simplify the answer, and in this case, 4/8 could be simplified to 1/2
