Type the missing numbers in this sequence: 69, 60, 51, 42, _____, _____, 15

Question

Type the missing numbers in this sequence:  69,    60,    51,    42,    _____,    _____,    15

Bytelearn · Accepted Answer

Determine Pattern: We need to determine the pattern in the sequence. By looking at the sequence, we can see that each number is decreasing by a certain amount. Let's find the difference between the first two numbers. Calculation: 69 - 60 = 9 The difference between the first two numbers is 9.Calculate Differences: Now let's check if the same difference applies to the next pair of numbers in the sequence. Calculation: 60 - 51 = 9 The difference between the second and third numbers is also 9.Confirm Consistency: We will check the difference between the third and fourth numbers to confirm the pattern. Calculation: 51 - 42 = 9 The difference between the third and fourth numbers is again 9.Apply Pattern: Since the pattern of decreasing by 9 is consistent, we can apply this pattern to find the next number in the sequence. Calculation: 42 - 9 = 33 The next number in the sequence is 33.Find Next Number: Now we will find the second missing number in the sequence by subtracting 9 from the number we just found. Calculation: 33 - 9 = 24 The second missing number in the sequence is 24.Find Second Missing Number: To ensure our pattern is correct, let's check if subtracting 9 from the last number we found will give us the final number in the sequence, which is 15. Calculation: 24 - 9 = 15 The result is 15, which matches the last number in the sequence, confirming our pattern is correct.

Type the missing numbers in this sequence: $\newline$ $69$ , $60$ , $51$ , $42$ , _, _, $15$

Full solution

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Related topics

Type the missing numbers in this sequence:\newline696969, 606060, 515151, 424242, _____, _____, 151515

Type the missing numbers in this sequence: $\newline$ $69$ , $60$ , $51$ , $42$ , _, _, $15$