Q. Type the missing number in this sequence:13, _, 9, 7, 5
Observe Sequence: We observe that the sequence is decreasing. To find the pattern, we need to determine the difference between the consecutive terms that are given.
Find Difference: We subtract 7 from 9 to find the difference between these two terms.9−7=2
Determine Pattern: We subtract 5 from 7 to find the difference between the next pair of terms.7−5=2
Calculate Missing Number: Since the difference between the terms is consistent and equal to 2, we can assume that the sequence decreases by 2 each time.
Verify Sequence: To find the missing number, we subtract 2 from 13. 13−2=11
Verify Sequence: To find the missing number, we subtract 2 from 13. 13−2=11We check if adding 2 to the missing number gives us the next number in the sequence, which is 9. 11+2=13, which is not correct. We should have subtracted 2 from 11 to get 9.