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Explanation:

(i) Two vowels can be arranged together in RIYADH in 5! × 2! = 240 ways
Hence, statement (i) is not true.

(ii) Total arrangements where vowels are not together = total arrangements possible – arrangements where vowels are together = 6! – 240 = 720 – 240 = 480

Hence, statement (ii) is also not true.

Hence, option (d).

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