UPSC Government Jobs Exams Category

In how many ways can the letters of the word ‘STRANGE’ be arranged so that the vowels may appear in the odd places?

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UPSC Other Question

7 candidates are to take examination, 2 in mathematics and remaining in different subjects. In how many ways can they be seated in a row so that the two examinees in Mathematics may not sit together? In how many ways can the letters of the word ‘MODESTY’ be arranged so that
(i) D and E are always together
(ii) D and E are never together.