Mathematics · Permutations and Combinations

How many three-digit numbers are there such that the middle digit is equal to the sum of the first digit and the third digit?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

155
250
345✓
440

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How many three-digit numbers are there such that the middle digit is equal to the sum of the first digit and the third digit?

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How many three-digit numbers are there such that the middle digit is equal to the sum of the first digit and the third digit?

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