When we apply Simpson’s 3/8 rule, the number of intervals n must be
Answer
Even
Odd
Multiple of 3
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Similarly in deriving composite Simpson’s 3/8 rule, we divide the interval of integration into n sub-intervals, where n is divisible by 3, and applying the integration formula
Multiple of 8

When applying Simpson’s 3/8 rule, the number of intervals  must be a multiple of 3.

Thus, the correct answer is Multiple of 3.

This requirement ensures that each set of three intervals can be used to apply the 3/8 rule effectively.