Multiple choice general knowledge math & puzzles

Choose the pair of numbers which comes next - 75 65 85 55 45 85 35 ? ?

  1. 25 15

  2. 25 85

  3. 35 25

  4. 35 85
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is an alternating series with two patterns. Odd positions (1st, 3rd, 5th, 7th): 75, 85, 45, 85 (decreasing by 30, then repeating 85). Even positions (2nd, 4th, 6th): 65, 55, 35 (decreasing by 10 each time). The next two terms are 25 (continue 65→55→35→25) and 85 (repeat pattern).

AI explanation

To answer this question, we need to look for a pattern or rule in the given sequence of numbers.

Looking at the sequence: 75 65 85 55 45 85 35 ? ?, we can observe the following pattern:

  • The sequence alternates between decreasing and increasing by 10.
  • The first number in each pair is the previous number minus 10, and the second number is the previous number plus 20.

Using this pattern, we can determine the next pair of numbers:

  • The previous number is 35. So, the next pair of numbers will be 35 minus 10, which is 25, and 35 plus 20, which is 55.

Therefore, the correct answer is option B) 25 85. This option follows the pattern observed in the given sequence.

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