Multiple choice

Directions: Find the next term of the series. 10, 19, 36, 69, 134, ?

  1. 266

  2. 268

  3. 263

  4. 261

  5. 253
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C Correct answer
Explanation

The pattern is: 10*2-1=19, 19*2-2=36, 36*2-3=69, 69*2-4=134, 134*2-5=263.

AI explanation

The differences between consecutive terms are 9, 17, 33, 65, which themselves increase by multiplying by 2 and subtracting 1: 9*2-1=17, 17*2-1=33, and 33*2-1=65. The next difference will be 65*2-1=129, so adding this to 134 gives 263. The result is 263.

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